157493240 has 32 divisors (see below), whose sum is σ = 361903680. Its totient is φ = 61656192.

The previous prime is 157493227. The next prime is 157493249. The reversal of 157493240 is 42394751.

It is a self number, because there is not a number n which added to its sum of digits gives 157493240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157493249) 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, 40007 + ... + 43766.

It is an arithmetic number, because the mean of its divisors is an integer number (11309490).

Almost surely, 2^157493240 is an apocalyptic number.

157493240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

157493240 is an abundant number, since it is smaller than the sum of its proper divisors (204410440).

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

157493240 is a wasteful number, since it uses less digits than its factorization.

157493240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83831 (or 83827 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 157493240 is about 12549.6310702745. The cubic root of 157493240 is about 540.0334227141.

The spelling of 157493240 in words is "one hundred fifty-seven million, four hundred ninety-three thousand, two hundred forty".