22949280 has 72 divisors (see below), whose sum is σ = 78319332. Its totient is φ = 6119424.

The previous prime is 22949279. The next prime is 22949291. The reversal of 22949280 is 8294922.

It can be written as a sum of positive squares in 2 ways, for example, as 22924944 + 24336 = 4788^2 + 156^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6529 + ... + 9408.

Almost surely, 2^22949280 is an apocalyptic number.

22949280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22949280 is an abundant number, since it is smaller than the sum of its proper divisors (55370052).

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

22949280 is a wasteful number, since it uses less digits than its factorization.

22949280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15958 (or 15947 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 22949280 is about 4790.5406792971. The cubic root of 22949280 is about 284.1774993028.

The spelling of 22949280 in words is "twenty-two million, nine hundred forty-nine thousand, two hundred eighty".