216894572 has 12 divisors (see below), whose sum is σ = 380425416. Its totient is φ = 108201600.

The previous prime is 216894541. The next prime is 216894593. The reversal of 216894572 is 275498612.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59429 + ... + 62972.

It is an arithmetic number, because the mean of its divisors is an integer number (31702118).

Almost surely, 2^216894572 is an apocalyptic number.

It is an amenable number.

216894572 is a deficient number, since it is larger than the sum of its proper divisors (163530844).

216894572 is a wasteful number, since it uses less digits than its factorization.

216894572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122848 (or 122846 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 216894572 is about 14727.3409684165. The cubic root of 216894572 is about 600.8271665426.

The spelling of 216894572 in words is "two hundred sixteen million, eight hundred ninety-four thousand, five hundred seventy-two".