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157306452 = 22397149907
BaseRepresentation
bin10010110000001…
…00111001010100
3101221222222212220
421120010321110
5310232301302
623335342340
73620040252
oct1130047124
9357888786
10157306452
1180882736
12448219b0
1326789754
1416c6b5d2
15dc244bc
hex9604e54

157306452 has 48 divisors (see below), whose sum is σ = 373732800. Its totient is φ = 51489792.

The previous prime is 157306447. The next prime is 157306481. The reversal of 157306452 is 254603751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172983 + ... + 173889.

It is an arithmetic number, because the mean of its divisors is an integer number (7786100).

Almost surely, 2157306452 is an apocalyptic number.

157306452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157306452 is an abundant number, since it is smaller than the sum of its proper divisors (216426348).

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

157306452 is a wasteful number, since it uses less digits than its factorization.

157306452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1160 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 157306452 is about 12542.1868906503. The cubic root of 157306452 is about 539.8198438806.

The spelling of 157306452 in words is "one hundred fifty-seven million, three hundred six thousand, four hundred fifty-two".

Divisors: 1 2 3 4 6 12 97 149 194 291 298 388 447 582 596 894 907 1164 1788 1814 2721 3628 5442 10884 14453 28906 43359 57812 86718 87979 135143 173436 175958 263937 270286 351916 405429 527874 540572 810858 1055748 1621716 13108871 26217742 39326613 52435484 78653226 157306452