157213030 has 32 divisors (see below), whose sum is σ = 320796000. Its totient is φ = 54991872.

The previous prime is 157213013. The next prime is 157213033. The reversal of 157213030 is 30312751.

It is a junction number, because it is equal to n+sod(n) for n = 157212992 and 157213010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157213033) 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, 29355 + ... + 34294.

It is an arithmetic number, because the mean of its divisors is an integer number (10024875).

Almost surely, 2^157213030 is an apocalyptic number.

157213030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

157213030 is an abundant number, since it is smaller than the sum of its proper divisors (163582970).

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

157213030 is a wasteful number, since it uses less digits than its factorization.

157213030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63688.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 157213030 is about 12538.4620268995. The cubic root of 157213030 is about 539.7129590166.

Adding to 157213030 its reverse (30312751), we get a palindrome (187525781).

The spelling of 157213030 in words is "one hundred fifty-seven million, two hundred thirteen thousand, thirty".