157944290 has 16 divisors (see below), whose sum is σ = 324914112. Its totient is φ = 54152304.

The previous prime is 157944271. The next prime is 157944307. The reversal of 157944290 is 92449751.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128104 + ... + 1128243.

It is an arithmetic number, because the mean of its divisors is an integer number (20307132).

Almost surely, 2^157944290 is an apocalyptic number.

157944290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157944290 is an abundant number, since it is smaller than the sum of its proper divisors (166969822).

157944290 is a wasteful number, since it uses less digits than its factorization.

157944290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256361.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 157944290 is about 12567.5888697872. The cubic root of 157944290 is about 540.5484710857.

The spelling of 157944290 in words is "one hundred fifty-seven million, nine hundred forty-four thousand, two hundred ninety".