220904810 has 16 divisors (see below), whose sum is σ = 454432896. Its totient is φ = 75738768.

The previous prime is 220904779. The next prime is 220904819. The reversal of 220904810 is 18409022.

It is a super-2 number, since 2×220904810² = 97597870162272200, 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 220904810.

It is not an unprimeable number, because it can be changed into a prime (220904819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1577822 + ... + 1577961.

It is an arithmetic number, because the mean of its divisors is an integer number (28402056).

Almost surely, 2^220904810 is an apocalyptic number.

220904810 is an abundant number, since it is smaller than the sum of its proper divisors (233528086).

220904810 is a wasteful number, since it uses less digits than its factorization.

220904810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155797.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 220904810 is about 14862.8668163312. The cubic root of 220904810 is about 604.5075427054.

The spelling of 220904810 in words is "two hundred twenty million, nine hundred four thousand, eight hundred ten".