213551872 has 36 divisors (see below), whose sum is σ = 444815280. Its totient is φ = 102130688.

The previous prime is 213551867. The next prime is 213551881. The reversal of 213551872 is 278155312.

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, 12247 + ... + 24022.

It is an arithmetic number, because the mean of its divisors is an integer number (12355980).

Almost surely, 2^213551872 is an apocalyptic number.

It is an amenable number.

213551872 is an abundant number, since it is smaller than the sum of its proper divisors (231263408).

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

213551872 is an equidigital number, since it uses as much as digits as its factorization.

213551872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36308 (or 36294 counting only the distinct ones).

The product of its digits is 16800, while the sum is 34.

The square root of 213551872 is about 14613.4141116989. The cubic root of 213551872 is about 597.7245966221.

The spelling of 213551872 in words is "two hundred thirteen million, five hundred fifty-one thousand, eight hundred seventy-two".