220993804 has 24 divisors (see below), whose sum is σ = 402015600. Its totient is φ = 106169280.

The previous prime is 220993781. The next prime is 220993837. The reversal of 220993804 is 408399022.

It is a super-2 number, since 2×220993804² = 97676522812780832, which contains 22 as substring.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

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 7 ways as a sum of consecutive naturals, for example, 19962 + ... + 28990.

It is an arithmetic number, because the mean of its divisors is an integer number (16750650).

Almost surely, 2^220993804 is an apocalyptic number.

It is an amenable number.

220993804 is a deficient number, since it is larger than the sum of its proper divisors (181021796).

220993804 is a wasteful number, since it uses less digits than its factorization.

220993804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9273 (or 9271 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 220993804 is about 14865.8603518263. The cubic root of 220993804 is about 604.5887093725.

The spelling of 220993804 in words is "two hundred twenty million, nine hundred ninety-three thousand, eight hundred four".