220477972 has 72 divisors (see below), whose sum is σ = 464427488. Its totient is φ = 90953280.

The previous prime is 220477967. The next prime is 220478021. The reversal of 220477972 is 279774022.

It is a super-2 number, since 2×220477972² = 97221072274465568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 421303 + ... + 421825.

Almost surely, 2^220477972 is an apocalyptic number.

220477972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

220477972 is an abundant number, since it is smaller than the sum of its proper divisors (243949516).

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

220477972 is a wasteful number, since it uses less digits than its factorization.

220477972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 220477972 is about 14848.5006650503. The cubic root of 220477972 is about 604.1179432849.

The spelling of 220477972 in words is "two hundred twenty million, four hundred seventy-seven thousand, nine hundred seventy-two".