157220230 has 16 divisors (see below), whose sum is σ = 285745824. Its totient is φ = 62277120.

The previous prime is 157220227. The next prime is 157220243. The reversal of 157220230 is 32022751.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75291 + ... + 77350.

It is an arithmetic number, because the mean of its divisors is an integer number (17859114).

Almost surely, 2^157220230 is an apocalyptic number.

157220230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157220230 is a deficient number, since it is larger than the sum of its proper divisors (128525594).

157220230 is a wasteful number, since it uses less digits than its factorization.

157220230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152751.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 157220230 is about 12538.7491401655. The cubic root of 157220230 is about 539.7211981004.

Adding to 157220230 its reverse (32022751), we get a palindrome (189242981).

The spelling of 157220230 in words is "one hundred fifty-seven million, two hundred twenty thousand, two hundred thirty".