220031200 has 36 divisors (see below), whose sum is σ = 537153120. Its totient is φ = 88012160.

The previous prime is 220031177. The next prime is 220031213. The reversal of 220031200 is 2130022.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 136720 + ... + 138319.

It is an arithmetic number, because the mean of its divisors is an integer number (14920920).

Almost surely, 2^220031200 is an apocalyptic number.

220031200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220031200 is an abundant number, since it is smaller than the sum of its proper divisors (317121920).

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

220031200 is a wasteful number, since it uses less digits than its factorization.

220031200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275059 (or 275046 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 220031200 is about 14833.4486886900. The cubic root of 220031200 is about 603.7096099816.

Adding to 220031200 its reverse (2130022), we get a palindrome (222161222).

The spelling of 220031200 in words is "two hundred twenty million, thirty-one thousand, two hundred".