157243590 has 48 divisors (see below), whose sum is σ = 467239968. Its totient is φ = 35941248.

The previous prime is 157243589. The next prime is 157243607. The reversal of 157243590 is 95342751.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124167 + ... + 125426.

It is an arithmetic number, because the mean of its divisors is an integer number (9734166).

Almost surely, 2^157243590 is an apocalyptic number.

157243590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157243590 is an abundant number, since it is smaller than the sum of its proper divisors (309996378).

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

157243590 is a wasteful number, since it uses less digits than its factorization.

157243590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249613 (or 249610 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 157243590 is about 12539.6806179424. The cubic root of 157243590 is about 539.7479276182.

The spelling of 157243590 in words is "one hundred fifty-seven million, two hundred forty-three thousand, five hundred ninety".