220472220 has 24 divisors (see below), whose sum is σ = 617322384. Its totient is φ = 58792576.

The previous prime is 220472183. The next prime is 220472237. The reversal of 220472220 is 22274022.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837209 + ... + 1837328.

It is an arithmetic number, because the mean of its divisors is an integer number (25721766).

Almost surely, 2^220472220 is an apocalyptic number.

220472220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220472220 is an abundant number, since it is smaller than the sum of its proper divisors (396850164).

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

220472220 is a wasteful number, since it uses less digits than its factorization.

220472220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674549 (or 3674547 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 220472220 is about 14848.3069741974. The cubic root of 220472220 is about 604.1126896737.

The spelling of 220472220 in words is "two hundred twenty million, four hundred seventy-two thousand, two hundred twenty".