213972884 has 12 divisors (see below), whose sum is σ = 375275124. Its totient is φ = 106751424.

The previous prime is 213972883. The next prime is 213972893. The reversal of 213972884 is 488279312.

213972884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 189667984 + 24304900 = 13772^2 + 4930^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213972883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56699 + ... + 60354.

It is an arithmetic number, because the mean of its divisors is an integer number (31272927).

Almost surely, 2^213972884 is an apocalyptic number.

It is an amenable number.

213972884 is a deficient number, since it is larger than the sum of its proper divisors (161302240).

213972884 is a wasteful number, since it uses less digits than its factorization.

213972884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117514 (or 117512 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 213972884 is about 14627.8120031671. The cubic root of 213972884 is about 598.1171383078.

The spelling of 213972884 in words is "two hundred thirteen million, nine hundred seventy-two thousand, eight hundred eighty-four".