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488157992 = 237217231139
BaseRepresentation
bin11101000110001…
…011001100101000
31021000112222212122
4131012023030220
51444432023432
6120234530412
715045163100
oct3506131450
91230488778
10488157992
11230609363
12117596a08
137a199caa
1448b92200
152ccc9612
hex1d18b328

488157992 has 144 divisors (see below), whose sum is σ = 1175932800. Its totient is φ = 189181440.

The previous prime is 488157959. The next prime is 488158061. The reversal of 488157992 is 299751884.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

Its product of digits (1451520) is a multiple of the sum of its prime factors (224).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3511859 + ... + 3511997.

It is an arithmetic number, because the mean of its divisors is an integer number (8166200).

Almost surely, 2488157992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 488157992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (587966400).

488157992 is an abundant number, since it is smaller than the sum of its proper divisors (687774808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

488157992 is a wasteful number, since it uses less digits than its factorization.

488157992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 196 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 53.

The square root of 488157992 is about 22094.2977258839. The cubic root of 488157992 is about 787.3843912594.

The spelling of 488157992 in words is "four hundred eighty-eight million, one hundred fifty-seven thousand, nine hundred ninety-two".

Divisors: 1 2 4 7 8 14 17 28 31 34 49 56 62 68 98 119 124 136 139 196 217 238 248 278 289 392 434 476 527 556 578 833 868 952 973 1054 1112 1156 1519 1666 1736 1946 2023 2108 2312 2363 3038 3332 3689 3892 4046 4216 4309 4726 6076 6664 6811 7378 7784 8092 8618 8959 9452 12152 13622 14161 14756 16184 16541 17236 17918 18904 25823 27244 28322 29512 30163 33082 34472 35836 40171 51646 54488 56644 60326 62713 66164 71672 73253 80342 103292 113288 115787 120652 125426 132328 146506 160684 206584 211141 231574 241304 250852 281197 293012 321368 422282 438991 463148 501704 512771 562394 586024 844564 877982 926296 1025542 1124788 1245301 1689128 1755964 1968379 2051084 2249576 2490602 3511928 3589397 3936758 4102168 4981204 7178794 7873516 8717107 9962408 14357588 15747032 17434214 28715176 34868428 61019749 69736856 122039498 244078996 488157992