156812216 has 64 divisors (see below), whose sum is σ = 348922080. Its totient is φ = 65249280.

The previous prime is 156812209. The next prime is 156812231. The reversal of 156812216 is 612218651.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53936 + ... + 56768.

Almost surely, 2^156812216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156812216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174461040).

156812216 is an abundant number, since it is smaller than the sum of its proper divisors (192109864).

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

156812216 is a wasteful number, since it uses less digits than its factorization.

156812216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904 (or 2900 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 156812216 is about 12522.4684467560. The cubic root of 156812216 is about 539.2539033216.

The spelling of 156812216 in words is "one hundred fifty-six million, eight hundred twelve thousand, two hundred sixteen".