157907490 has 128 divisors (see below), whose sum is σ = 433907712. Its totient is φ = 36495360.

The previous prime is 157907483. The next prime is 157907501. The reversal of 157907490 is 94709751.

It is a happy 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 63 ways as a sum of consecutive naturals, for example, 447154 + ... + 447506.

It is an arithmetic number, because the mean of its divisors is an integer number (3389904).

Almost surely, 2^157907490 is an apocalyptic number.

157907490 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 157907490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216953856).

157907490 is an abundant number, since it is smaller than the sum of its proper divisors (276000222).

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

157907490 is a wasteful number, since it uses less digits than its factorization.

157907490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444.

The product of its (nonzero) digits is 79380, while the sum is 42.

The square root of 157907490 is about 12566.1247009569. The cubic root of 157907490 is about 540.5064863900.

The spelling of 157907490 in words is "one hundred fifty-seven million, nine hundred seven thousand, four hundred ninety".