220790880 has 96 divisors (see below), whose sum is σ = 772783200. Its totient is φ = 58876416.

The previous prime is 220790861. The next prime is 220790923. The reversal of 220790880 is 88097022.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×220790880² = 97497225382348800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21235 + ... + 29874.

It is an arithmetic number, because the mean of its divisors is an integer number (8049825).

Almost surely, 2^220790880 is an apocalyptic number.

220790880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220790880 is an abundant number, since it is smaller than the sum of its proper divisors (551992320).

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

220790880 is a wasteful number, since it uses less digits than its factorization.

220790880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51133 (or 51119 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 220790880 is about 14859.0336159523. The cubic root of 220790880 is about 604.4036014229.

The spelling of 220790880 in words is "two hundred twenty million, seven hundred ninety thousand, eight hundred eighty".