213390224 has 20 divisors (see below), whose sum is σ = 413687436. Its totient is φ = 106632192.

The previous prime is 213390193. The next prime is 213390253. The reversal of 213390224 is 422093312.

It can be written as a sum of positive squares in 2 ways, for example, as 184960000 + 28430224 = 13600^2 + 5332^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213390193 and 213390202.

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, 36872 + ... + 42264.

Almost surely, 2^213390224 is an apocalyptic number.

It is an amenable number.

213390224 is a deficient number, since it is larger than the sum of its proper divisors (200297212).

213390224 is a wasteful number, since it uses less digits than its factorization.

213390224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7874 (or 7868 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 213390224 is about 14607.8822558234. The cubic root of 213390224 is about 597.5737427585.

The spelling of 213390224 in words is "two hundred thirteen million, three hundred ninety thousand, two hundred twenty-four".