213405392 has 10 divisors (see below), whose sum is σ = 413472978. Its totient is φ = 106702688.

The previous prime is 213405377. The next prime is 213405407. The reversal of 213405392 is 293504312.

It is an interprime number because it is at equal distance from previous prime (213405377) and next prime (213405407).

It can be written as a sum of positive squares in only one way, i.e., 212693056 + 712336 = 14584^2 + 844^2 .

It is a super-2 number, since 2×213405392² = 91083722669347328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6668903 + ... + 6668934.

Almost surely, 2^213405392 is an apocalyptic number.

It is an amenable number.

213405392 is a deficient number, since it is larger than the sum of its proper divisors (200067586).

213405392 is a wasteful number, since it uses less digits than its factorization.

213405392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13337845 (or 13337839 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 213405392 is about 14608.4014183620. The cubic root of 213405392 is about 597.5879011449.

The spelling of 213405392 in words is "two hundred thirteen million, four hundred five thousand, three hundred ninety-two".