157212230 has 16 divisors (see below), whose sum is σ = 323408160. Its totient is φ = 53901312.

The previous prime is 157212229. The next prime is 157212233. The reversal of 157212230 is 32212751.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 157212196 and 157212205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157212233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122875 + ... + 1123014.

It is an arithmetic number, because the mean of its divisors is an integer number (20213010).

Almost surely, 2^157212230 is an apocalyptic number.

157212230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157212230 is an abundant number, since it is smaller than the sum of its proper divisors (166195930).

157212230 is a wasteful number, since it uses less digits than its factorization.

157212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245903.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 157212230 is about 12538.4301250196. The cubic root of 157212230 is about 539.7120435474.

Adding to 157212230 its reverse (32212751), we get a palindrome (189424981).

The spelling of 157212230 in words is "one hundred fifty-seven million, two hundred twelve thousand, two hundred thirty".