220972136 has 48 divisors (see below), whose sum is σ = 520487520. Its totient is φ = 86090400.

The previous prime is 220972133. The next prime is 220972139. The reversal of 220972136 is 631279022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (220972133) and next prime (220972139).

It is not an unprimeable number, because it can be changed into a prime (220972133) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 9530 + ... + 23081.

It is an arithmetic number, because the mean of its divisors is an integer number (10843490).

Almost surely, 2^220972136 is an apocalyptic number.

It is an amenable number.

220972136 is an abundant number, since it is smaller than the sum of its proper divisors (299515384).

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

220972136 is a wasteful number, since it uses less digits than its factorization.

220972136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32646 (or 32631 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 220972136 is about 14865.1315500402. The cubic root of 220972136 is about 604.5689491559.

The spelling of 220972136 in words is "two hundred twenty million, nine hundred seventy-two thousand, one hundred thirty-six".