220401290 has 16 divisors (see below), whose sum is σ = 396928512. Its totient is φ = 88114704.

The previous prime is 220401241. The next prime is 220401317. The reversal of 220401290 is 92104022.

220401290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19967 + ... + 28973.

It is an arithmetic number, because the mean of its divisors is an integer number (24808032).

Almost surely, 2^220401290 is an apocalyptic number.

220401290 is a deficient number, since it is larger than the sum of its proper divisors (176527222).

220401290 is a wasteful number, since it uses less digits than its factorization.

220401290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11461.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 220401290 is about 14845.9182942653. The cubic root of 220401290 is about 604.0478979748.

The spelling of 220401290 in words is "two hundred twenty million, four hundred one thousand, two hundred ninety".