220642700 has 36 divisors (see below), whose sum is σ = 481109832. Its totient is φ = 87830400.

The previous prime is 220642691. The next prime is 220642727. The reversal of 220642700 is 7246022.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15872 + ... + 26328.

It is an arithmetic number, because the mean of its divisors is an integer number (13364162).

Almost surely, 2^220642700 is an apocalyptic number.

220642700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220642700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240554916).

220642700 is an abundant number, since it is smaller than the sum of its proper divisors (260467132).

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

220642700 is a wasteful number, since it uses less digits than its factorization.

220642700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10682 (or 10675 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 220642700 is about 14854.0465867049. The cubic root of 220642700 is about 604.2683594709.

Adding to 220642700 its reverse (7246022), we get a palindrome (227888722).

The spelling of 220642700 in words is "two hundred twenty million, six hundred forty-two thousand, seven hundred".