157715740 has 96 divisors (see below), whose sum is σ = 410659200. Its totient is φ = 49545216.

The previous prime is 157715731. The next prime is 157715759. The reversal of 157715740 is 47517751.

It is a self number, because there is not a number n which added to its sum of digits gives 157715740.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 351036 + ... + 351484.

It is an arithmetic number, because the mean of its divisors is an integer number (4277700).

Almost surely, 2^157715740 is an apocalyptic number.

157715740 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 157715740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205329600).

157715740 is an abundant number, since it is smaller than the sum of its proper divisors (252943460).

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

157715740 is a wasteful number, since it uses less digits than its factorization.

157715740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 37.

The square root of 157715740 is about 12558.4927439562. The cubic root of 157715740 is about 540.2876154156.

The spelling of 157715740 in words is "one hundred fifty-seven million, seven hundred fifteen thousand, seven hundred forty".