22651552 has 96 divisors (see below), whose sum is σ = 57697920. Its totient is φ = 8494080.

The previous prime is 22651549. The next prime is 22651567. The reversal of 22651552 is 25515622.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 22651552.

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, 71298 + ... + 71614.

It is an arithmetic number, because the mean of its divisors is an integer number (601020).

Almost surely, 2^22651552 is an apocalyptic number.

22651552 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22651552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28848960).

22651552 is an abundant number, since it is smaller than the sum of its proper divisors (35046368).

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

22651552 is a wasteful number, since it uses less digits than its factorization.

22651552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 366 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 22651552 is about 4759.3646634819. The cubic root of 22651552 is about 282.9432392500.

The spelling of 22651552 in words is "twenty-two million, six hundred fifty-one thousand, five hundred fifty-two".