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253838832 = 243131723929
BaseRepresentation
bin11110010000101…
…00010111110000
3122200122100102020
433020110113300
51004440320312
641104351440
76201410622
oct1710242760
9580570366
10253838832
11120315965
1271015580
1340787ac0
14259d8c12
151744178c
hexf2145f0

253838832 has 80 divisors (see below), whose sum is σ = 747764640. Its totient is φ = 73506816.

The previous prime is 253838807. The next prime is 253838839. The reversal of 253838832 is 238838352.

It is a super-2 number, since 2×2538388322 = 128868305262248448, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253838839) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1357 + ... + 22572.

It is an arithmetic number, because the mean of its divisors is an integer number (9347058).

Almost surely, 2253838832 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 253838832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (373882320).

253838832 is an abundant number, since it is smaller than the sum of its proper divisors (493925808).

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

253838832 is a wasteful number, since it uses less digits than its factorization.

253838832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23970 (or 23964 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 253838832 is about 15932.3203583157. The cubic root of 253838832 is about 633.1685771500.

The spelling of 253838832 in words is "two hundred fifty-three million, eight hundred thirty-eight thousand, eight hundred thirty-two".

Divisors: 1 2 3 4 6 8 12 13 16 17 24 26 34 39 48 51 52 68 78 102 104 136 156 204 208 221 272 312 408 442 624 663 816 884 1326 1768 2652 3536 5304 10608 23929 47858 71787 95716 143574 191432 287148 311077 382864 406793 574296 622154 813586 933231 1148592 1220379 1244308 1627172 1866462 2440758 2488616 3254344 3732924 4881516 4977232 5288309 6508688 7465848 9763032 10576618 14931696 15864927 19526064 21153236 31729854 42306472 63459708 84612944 126919416 253838832