220946990 has 32 divisors (see below), whose sum is σ = 435028320. Its totient is φ = 80128000.

The previous prime is 220946981. The next prime is 220947007. The reversal of 220946990 is 99649022.

220946990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41606 + ... + 46614.

It is an arithmetic number, because the mean of its divisors is an integer number (13594635).

Almost surely, 2^220946990 is an apocalyptic number.

220946990 is a deficient number, since it is larger than the sum of its proper divisors (214081330).

220946990 is a wasteful number, since it uses less digits than its factorization.

220946990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5428.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 220946990 is about 14864.2857211505. The cubic root of 220946990 is about 604.5460155442.

The spelling of 220946990 in words is "two hundred twenty million, nine hundred forty-six thousand, nine hundred ninety".