22215080 has 32 divisors (see below), whose sum is σ = 50201640. Its totient is φ = 8847360.

The previous prime is 22215049. The next prime is 22215091. The reversal of 22215080 is 8051222.

It can be written as a sum of positive squares in 4 ways, for example, as 22108804 + 106276 = 4702^2 + 326^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9200 + ... + 11360.

Almost surely, 2^22215080 is an apocalyptic number.

22215080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22215080 is an abundant number, since it is smaller than the sum of its proper divisors (27986560).

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

22215080 is a wasteful number, since it uses less digits than its factorization.

22215080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2429 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 22215080 is about 4713.2875999667. The cubic root of 22215080 is about 281.1140986222.

The spelling of 22215080 in words is "twenty-two million, two hundred fifteen thousand, eighty".