216380922 has 32 divisors (see below), whose sum is σ = 441475584. Its totient is φ = 70686000.

The previous prime is 216380897. The next prime is 216380933. The reversal of 216380922 is 229083612.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83547 + ... + 86097.

It is an arithmetic number, because the mean of its divisors is an integer number (13796112).

Almost surely, 2^216380922 is an apocalyptic number.

216380922 is an abundant number, since it is smaller than the sum of its proper divisors (225094662).

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

216380922 is a wasteful number, since it uses less digits than its factorization.

216380922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 216380922 is about 14709.8919778495. The cubic root of 216380922 is about 600.3524984231.

The spelling of 216380922 in words is "two hundred sixteen million, three hundred eighty thousand, nine hundred twenty-two".