157897530 has 192 divisors, whose sum is σ = 519187968. Its totient is φ = 32440320.

The previous prime is 157897483. The next prime is 157897549. The reversal of 157897530 is 35798751.

157897530 is a `hidden beast` number, since 1 + 578 + 9 + 75 + 3 + 0 = 666.

157897530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 246010 + ... + 246650.

It is an arithmetic number, because the mean of its divisors is an integer number (2704104).

Almost surely, 2^157897530 is an apocalyptic number.

157897530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157897530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259593984).

157897530 is an abundant number, since it is smaller than the sum of its proper divisors (361290438).

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

157897530 is a wasteful number, since it uses less digits than its factorization.

157897530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 698 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The square root of 157897530 is about 12565.7283911439. The cubic root of 157897530 is about 540.4951220192.

The spelling of 157897530 in words is "one hundred fifty-seven million, eight hundred ninety-seven thousand, five hundred thirty".