213049390 has 16 divisors (see below), whose sum is σ = 383663808. Its totient is φ = 85180896.

The previous prime is 213049381. The next prime is 213049411. The reversal of 213049390 is 93940312.

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 in 7 ways as a sum of consecutive naturals, for example, 30244 + ... + 36616.

It is an arithmetic number, because the mean of its divisors is an integer number (23978988).

Almost surely, 2^213049390 is an apocalyptic number.

213049390 is a deficient number, since it is larger than the sum of its proper divisors (170614418).

213049390 is a wasteful number, since it uses less digits than its factorization.

213049390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9723.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 213049390 is about 14596.2114947681. The cubic root of 213049390 is about 597.2554182986.

The spelling of 213049390 in words is "two hundred thirteen million, forty-nine thousand, three hundred ninety".