216057364 has 18 divisors (see below), whose sum is σ = 384707582. Its totient is φ = 106144800.

The previous prime is 216057323. The next prime is 216057371. The reversal of 216057364 is 463750612.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 9560464 + 206496900 = 3092^2 + 14370^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 229134 + ... + 230074.

Almost surely, 2^216057364 is an apocalyptic number.

It is an amenable number.

216057364 is a deficient number, since it is larger than the sum of its proper divisors (168650218).

216057364 is an frugal number, since it uses more digits than its factorization.

216057364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1947 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 216057364 is about 14698.8898900563. The cubic root of 216057364 is about 600.0531101135.

The spelling of 216057364 in words is "two hundred sixteen million, fifty-seven thousand, three hundred sixty-four".