157216812 has 24 divisors (see below), whose sum is σ = 370270656. Its totient is φ = 51915408.

The previous prime is 157216793. The next prime is 157216823. The reversal of 157216812 is 218612751.

157216812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 59938 + ... + 62505.

It is an arithmetic number, because the mean of its divisors is an integer number (15427944).

Almost surely, 2^157216812 is an apocalyptic number.

157216812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

157216812 is an abundant number, since it is smaller than the sum of its proper divisors (213053844).

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

157216812 is a wasteful number, since it uses less digits than its factorization.

157216812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122557 (or 122555 counting only the distinct ones).

The product of its digits is 6720, while the sum is 33.

The square root of 157216812 is about 12538.6128419375. The cubic root of 157216812 is about 539.7172868556.

The spelling of 157216812 in words is "one hundred fifty-seven million, two hundred sixteen thousand, eight hundred twelve".