220142656 has 112 divisors (see below), whose sum is σ = 489825792. Its totient is φ = 97689600.

The previous prime is 220142651. The next prime is 220142677. The reversal of 220142656 is 656241022.

It is not an unprimeable number, because it can be changed into a prime (220142651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2057355 + ... + 2057461.

Almost surely, 2^220142656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220142656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244912896).

220142656 is an abundant number, since it is smaller than the sum of its proper divisors (269683136).

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

220142656 is a wasteful number, since it uses less digits than its factorization.

220142656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 220142656 is about 14837.2051276512. The cubic root of 220142656 is about 603.8115284067.

Adding to 220142656 its reverse (656241022), we get a palindrome (876383678).

The spelling of 220142656 in words is "two hundred twenty million, one hundred forty-two thousand, six hundred fifty-six".