22751560 has 32 divisors (see below), whose sum is σ = 55130040. Its totient is φ = 8400384.

The previous prime is 22751557. The next prime is 22751591. The reversal of 22751560 is 6515722.

It can be written as a sum of positive squares in 4 ways, for example, as 13883076 + 8868484 = 3726^2 + 2978^2 .

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 7 ways as a sum of consecutive naturals, for example, 21357 + ... + 22396.

Almost surely, 2^22751560 is an apocalyptic number.

22751560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22751560 is an abundant number, since it is smaller than the sum of its proper divisors (32378480).

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

22751560 is a wasteful number, since it uses less digits than its factorization.

22751560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43777 (or 43773 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 22751560 is about 4769.8595367159. The cubic root of 22751560 is about 283.3590318867.

The spelling of 22751560 in words is "twenty-two million, seven hundred fifty-one thousand, five hundred sixty".