213248864 has 12 divisors (see below), whose sum is σ = 419833764. Its totient is φ = 106624416.

The previous prime is 213248851. The next prime is 213248881. The reversal of 213248864 is 468842312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3331982 + ... + 3332045.

It is an arithmetic number, because the mean of its divisors is an integer number (34986147).

Almost surely, 2^213248864 is an apocalyptic number.

It is an amenable number.

213248864 is a deficient number, since it is larger than the sum of its proper divisors (206584900).

213248864 is an equidigital number, since it uses as much as digits as its factorization.

213248864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6664037 (or 6664029 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 213248864 is about 14603.0429705593. The cubic root of 213248864 is about 597.4417596986.

The spelling of 213248864 in words is "two hundred thirteen million, two hundred forty-eight thousand, eight hundred sixty-four".