220123998 has 48 divisors (see below), whose sum is σ = 495567072. Its totient is φ = 70560000.

The previous prime is 220123951. The next prime is 220124033. The reversal of 220123998 is 899321022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50298 + ... + 54498.

It is an arithmetic number, because the mean of its divisors is an integer number (10324314).

Almost surely, 2^220123998 is an apocalyptic number.

220123998 is an abundant number, since it is smaller than the sum of its proper divisors (275443074).

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

220123998 is a wasteful number, since it uses less digits than its factorization.

220123998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4321 (or 4318 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 220123998 is about 14836.5763570980. The cubic root of 220123998 is about 603.7944694172.

The spelling of 220123998 in words is "two hundred twenty million, one hundred twenty-three thousand, nine hundred ninety-eight".