212926864 has 40 divisors (see below), whose sum is σ = 422832312. Its totient is φ = 103833600.

The previous prime is 212926759. The next prime is 212926877. The reversal of 212926864 is 468629212.

It can be written as a sum of positive squares in 4 ways, for example, as 400 + 212926464 = 20^2 + 14592^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163014 + ... + 164314.

Almost surely, 2^212926864 is an apocalyptic number.

It is an amenable number.

212926864 is a deficient number, since it is larger than the sum of its proper divisors (209905448).

212926864 is a wasteful number, since it uses less digits than its factorization.

212926864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 1549 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 212926864 is about 14592.0137061339. The cubic root of 212926864 is about 597.1409012681.

The spelling of 212926864 in words is "two hundred twelve million, nine hundred twenty-six thousand, eight hundred sixty-four".