216156344 has 32 divisors (see below), whose sum is σ = 411754320. Its totient is φ = 106369536.

The previous prime is 216156341. The next prime is 216156359. The reversal of 216156344 is 443651612.

It is a self number, because there is not a number n which added to its sum of digits gives 216156344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216156341) 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, 141167 + ... + 142689.

Almost surely, 2^216156344 is an apocalyptic number.

It is an amenable number.

216156344 is a deficient number, since it is larger than the sum of its proper divisors (195597976).

216156344 is a wasteful number, since it uses less digits than its factorization.

216156344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1799 (or 1795 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 216156344 is about 14702.2564254607. The cubic root of 216156344 is about 600.1447280498.

The spelling of 216156344 in words is "two hundred sixteen million, one hundred fifty-six thousand, three hundred forty-four".