213820932 has 48 divisors (see below), whose sum is σ = 538372800. Its totient is φ = 65659008.

The previous prime is 213820909. The next prime is 213820963. The reversal of 213820932 is 239028312.

It is a happy number.

It is a super-2 number, since 2×213820932² = 91438781922697248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 213820932.

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 15 ways as a sum of consecutive naturals, for example, 100819 + ... + 102917.

It is an arithmetic number, because the mean of its divisors is an integer number (11216100).

Almost surely, 2^213820932 is an apocalyptic number.

It is an amenable number.

213820932 is an abundant number, since it is smaller than the sum of its proper divisors (324551868).

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

213820932 is a wasteful number, since it uses less digits than its factorization.

213820932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2772 (or 2770 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 213820932 is about 14622.6171392128. The cubic root of 213820932 is about 597.9755212703.

The spelling of 213820932 in words is "two hundred thirteen million, eight hundred twenty thousand, nine hundred thirty-two".