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253285480 = 235743109193
BaseRepresentation
bin11110001100011…
…01010001101000
3122122121020100201
433012031101220
51004320113410
641044441544
76163614430
oct1706152150
9578536321
10253285480
1111aa78148
12709a92b4
1340622c86
14258d32c0
151738283a
hexf18d468

253285480 has 128 divisors (see below), whose sum is σ = 676051200. Its totient is φ = 83607552.

The previous prime is 253285441. The next prime is 253285517. The reversal of 253285480 is 84582352.

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 31 ways as a sum of consecutive naturals, for example, 1312264 + ... + 1312456.

It is an arithmetic number, because the mean of its divisors is an integer number (5281650).

Almost surely, 2253285480 is an apocalyptic number.

253285480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253285480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338025600).

253285480 is an abundant number, since it is smaller than the sum of its proper divisors (422765720).

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

253285480 is a wasteful number, since it uses less digits than its factorization.

253285480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

The square root of 253285480 is about 15914.9451774111. The cubic root of 253285480 is about 632.7081537710.

The spelling of 253285480 in words is "two hundred fifty-three million, two hundred eighty-five thousand, four hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 43 56 70 86 109 140 172 193 215 218 280 301 344 386 430 436 545 602 763 772 860 872 965 1090 1204 1351 1505 1526 1544 1720 1930 2180 2408 2702 3010 3052 3815 3860 4360 4687 5404 6020 6104 6755 7630 7720 8299 9374 10808 12040 13510 15260 16598 18748 21037 23435 27020 30520 32809 33196 37496 41495 42074 46870 54040 58093 65618 66392 82990 84148 93740 105185 116186 131236 147259 164045 165980 168296 187480 210370 232372 262472 290465 294518 328090 331960 420740 464744 580930 589036 656180 736295 841480 904591 1161860 1178072 1312360 1472590 1809182 2323720 2945180 3618364 4522955 5890360 6332137 7236728 9045910 12664274 18091820 25328548 31660685 36183640 50657096 63321370 126642740 253285480