220399970 has 32 divisors (see below), whose sum is σ = 461956608. Its totient is φ = 74138688.

The previous prime is 220399937. The next prime is 220399973. The reversal of 220399970 is 79993022.

220399970 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×220399970² = 97152293552001800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220399973) by changing a digit.

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, 25994 + ... + 33413.

It is an arithmetic number, because the mean of its divisors is an integer number (14436144).

Almost surely, 2^220399970 is an apocalyptic number.

220399970 is an abundant number, since it is smaller than the sum of its proper divisors (241556638).

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

220399970 is a wasteful number, since it uses less digits than its factorization.

220399970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59474.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 220399970 is about 14845.8738375348. The cubic root of 220399970 is about 604.0466920762.

The spelling of 220399970 in words is "two hundred twenty million, three hundred ninety-nine thousand, nine hundred seventy".