157630212 has 96 divisors (see below), whose sum is σ = 425770240. Its totient is φ = 51018336.

The previous prime is 157630211. The next prime is 157630219. The reversal of 157630212 is 212036751.

It is a happy number.

157630212 is a `hidden beast` number, since 1 + 5 + 7 + 630 + 21 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (157630211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 323433 + ... + 323919.

Almost surely, 2^157630212 is an apocalyptic number.

157630212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 157630212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212885120).

157630212 is an abundant number, since it is smaller than the sum of its proper divisors (268140028).

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

157630212 is an equidigital number, since it uses as much as digits as its factorization.

157630212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 157630212 is about 12555.0870964721. The cubic root of 157630212 is about 540.1899331873.

Adding to 157630212 its reverse (212036751), we get a palindrome (369666963).

The spelling of 157630212 in words is "one hundred fifty-seven million, six hundred thirty thousand, two hundred twelve".