216379374 has 16 divisors (see below), whose sum is σ = 433632000. Its totient is φ = 71980920.

The previous prime is 216379369. The next prime is 216379393. The reversal of 216379374 is 473973612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33142 + ... + 39129.

It is an arithmetic number, because the mean of its divisors is an integer number (27102000).

Almost surely, 2^216379374 is an apocalyptic number.

216379374 is an abundant number, since it is smaller than the sum of its proper divisors (217252626).

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

216379374 is a wasteful number, since it uses less digits than its factorization.

216379374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72775.

The product of its digits is 190512, while the sum is 42.

The square root of 216379374 is about 14709.8393601018. The cubic root of 216379374 is about 600.3510667690.

The spelling of 216379374 in words is "two hundred sixteen million, three hundred seventy-nine thousand, three hundred seventy-four".