157406990 has 32 divisors (see below), whose sum is σ = 305708256. Its totient is φ = 58008960.

The previous prime is 157406989. The next prime is 157406993. The reversal of 157406990 is 99604751.

157406990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157406993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104684 + ... + 106176.

It is an arithmetic number, because the mean of its divisors is an integer number (9553383).

Almost surely, 2^157406990 is an apocalyptic number.

157406990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157406990 is a deficient number, since it is larger than the sum of its proper divisors (148301266).

157406990 is a wasteful number, since it uses less digits than its factorization.

157406990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 157406990 is about 12546.1942436741. The cubic root of 157406990 is about 539.9348229520.

The spelling of 157406990 in words is "one hundred fifty-seven million, four hundred six thousand, nine hundred ninety".