157939740 has 288 divisors, whose sum is σ = 588349440. Its totient is φ = 35054208.

The previous prime is 157939739. The next prime is 157939751. The reversal of 157939740 is 47939751.

157939740 is a `hidden beast` number, since 1 + 579 + 3 + 9 + 74 + 0 = 666.

157939740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×157939740² = 49889922942535200, which contains 22 as substring.

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

It is a congruent number.

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, 1243557 + ... + 1243683.

It is an arithmetic number, because the mean of its divisors is an integer number (2042880).

Almost surely, 2^157939740 is an apocalyptic number.

157939740 is a gapful number since it is divisible by the number (10) 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 157939740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (294174720).

157939740 is an abundant number, since it is smaller than the sum of its proper divisors (430409700).

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

157939740 is a wasteful number, since it uses less digits than its factorization.

157939740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 157939740 is about 12567.4078472850. The cubic root of 157939740 is about 540.5432803965.

The spelling of 157939740 in words is "one hundred fifty-seven million, nine hundred thirty-nine thousand, seven hundred forty".