213366494 has 16 divisors (see below), whose sum is σ = 358582896. Its totient is φ = 94363200.

The previous prime is 213366451. The next prime is 213366509. The reversal of 213366494 is 494663312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130247 + ... + 131874.

It is an arithmetic number, because the mean of its divisors is an integer number (22411431).

Almost surely, 2^213366494 is an apocalyptic number.

213366494 is a deficient number, since it is larger than the sum of its proper divisors (145216402).

213366494 is a wasteful number, since it uses less digits than its factorization.

213366494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262171.

The product of its digits is 93312, while the sum is 38.

The square root of 213366494 is about 14607.0700005169. The cubic root of 213366494 is about 597.5515909305.

The spelling of 213366494 in words is "two hundred thirteen million, three hundred sixty-six thousand, four hundred ninety-four".