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157207480 = 2354783621
BaseRepresentation
bin10010101111011…
…00101110111000
3101221210222010021
421113230232320
5310221114410
623333300224
73616145563
oct1127545670
9357728107
10157207480
1180815341
1244794674
13267536a1
1416c434da
15dc04eda
hex95ecbb8

157207480 has 32 divisors (see below), whose sum is σ = 361247040. Its totient is φ = 61544320.

The previous prime is 157207429. The next prime is 157207481. The reversal of 157207480 is 84702751.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157207481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39931 + ... + 43690.

It is an arithmetic number, because the mean of its divisors is an integer number (11288970).

Almost surely, 2157207480 is an apocalyptic number.

157207480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157207480 is an abundant number, since it is smaller than the sum of its proper divisors (204039560).

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

157207480 is a wasteful number, since it uses less digits than its factorization.

157207480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83679 (or 83675 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 157207480 is about 12538.2407059364. The cubic root of 157207480 is about 539.7066078845.

The spelling of 157207480 in words is "one hundred fifty-seven million, two hundred seven thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 20 40 47 94 188 235 376 470 940 1880 83621 167242 334484 418105 668968 836210 1672420 3344840 3930187 7860374 15720748 19650935 31441496 39301870 78603740 157207480