213938888 has 16 divisors (see below), whose sum is σ = 401605980. Its totient is φ = 106843968.

The previous prime is 213938869. The next prime is 213938927. The reversal of 213938888 is 888839312.

It can be written as a sum of positive squares in 2 ways, for example, as 212634724 + 1304164 = 14582^2 + 1142^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8231 + ... + 22262.

Almost surely, 2^213938888 is an apocalyptic number.

It is an amenable number.

213938888 is a deficient number, since it is larger than the sum of its proper divisors (187667092).

213938888 is a wasteful number, since it uses less digits than its factorization.

213938888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31376 (or 31372 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 213938888 is about 14626.6499240257. The cubic root of 213938888 is about 598.0854603574.

The spelling of 213938888 in words is "two hundred thirteen million, nine hundred thirty-eight thousand, eight hundred eighty-eight".