220398870 has 32 divisors (see below), whose sum is σ = 529623648. Its totient is φ = 58699008.

The previous prime is 220398851. The next prime is 220398883. The reversal of 220398870 is 78893022.

It is a Curzon number.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 22122 + ... + 30498.

It is an arithmetic number, because the mean of its divisors is an integer number (16550739).

Almost surely, 2^220398870 is an apocalyptic number.

220398870 is an abundant number, since it is smaller than the sum of its proper divisors (309224778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220398870 is a wasteful number, since it uses less digits than its factorization.

220398870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9264.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 220398870 is about 14845.8367901577. The cubic root of 220398870 is about 604.0456871571.

The spelling of 220398870 in words is "two hundred twenty million, three hundred ninety-eight thousand, eight hundred seventy".