213384272 has 20 divisors (see below), whose sum is σ = 437752116. Its totient is φ = 100416000.

The previous prime is 213384263. The next prime is 213384299. The reversal of 213384272 is 272483312.

It can be written as a sum of positive squares in 2 ways, for example, as 158860816 + 54523456 = 12604^2 + 7384^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391979 + ... + 392522.

Almost surely, 2^213384272 is an apocalyptic number.

It is an amenable number.

213384272 is an abundant number, since it is smaller than the sum of its proper divisors (224367844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213384272 is a wasteful number, since it uses less digits than its factorization.

213384272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784526 (or 784520 counting only the distinct ones).

The product of its digits is 16128, while the sum is 32.

The square root of 213384272 is about 14607.6785287738. The cubic root of 213384272 is about 597.5681867526.

The spelling of 213384272 in words is "two hundred thirteen million, three hundred eighty-four thousand, two hundred seventy-two".