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252672780 = 22358947317
BaseRepresentation
bin11110000111101…
…11101100001100
3122121110002220010
433003313230030
51004141012110
641023353220
76155453223
oct1703675414
9577402803
10252672780
1111a699888
1270752810
134046a129
14257b3cba
15172b1020
hexf0f7b0c

252672780 has 48 divisors (see below), whose sum is σ = 715448160. Its totient is φ = 66620928.

The previous prime is 252672767. The next prime is 252672793. The reversal of 252672780 is 87276252.

252672780 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (252672767) and next prime (252672793).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18319 + ... + 28998.

It is an arithmetic number, because the mean of its divisors is an integer number (14905170).

Almost surely, 2252672780 is an apocalyptic number.

252672780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252672780 is an abundant number, since it is smaller than the sum of its proper divisors (462775380).

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

252672780 is a wasteful number, since it uses less digits than its factorization.

252672780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47418 (or 47416 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 252672780 is about 15895.6843199656. The cubic root of 252672780 is about 632.1975661510.

The spelling of 252672780 in words is "two hundred fifty-two million, six hundred seventy-two thousand, seven hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 89 178 267 356 445 534 890 1068 1335 1780 2670 5340 47317 94634 141951 189268 236585 283902 473170 567804 709755 946340 1419510 2839020 4211213 8422426 12633639 16844852 21056065 25267278 42112130 50534556 63168195 84224260 126336390 252672780