220475890 has 32 divisors (see below), whose sum is σ = 421956864. Its totient is φ = 82656000.

The previous prime is 220475887. The next prime is 220475903. The reversal of 220475890 is 98574022.

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, 40087 + ... + 45253.

It is an arithmetic number, because the mean of its divisors is an integer number (13186152).

Almost surely, 2^220475890 is an apocalyptic number.

220475890 is a deficient number, since it is larger than the sum of its proper divisors (201480974).

220475890 is a wasteful number, since it uses less digits than its factorization.

220475890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5442.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 220475890 is about 14848.4305567962. The cubic root of 220475890 is about 604.1160416928.

The spelling of 220475890 in words is "two hundred twenty million, four hundred seventy-five thousand, eight hundred ninety".