22801560 has 64 divisors (see below), whose sum is σ = 68947200. Its totient is φ = 6032256.

The previous prime is 22801547. The next prime is 22801589. The reversal of 22801560 is 6510822.

It is a super-2 number, since 2×22801560² = 1039822276867200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 22801560.

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, 15997 + ... + 17363.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^22801560 is an apocalyptic number.

22801560 is a gapful number since it is divisible by the number (20) 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 22801560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34473600).

22801560 is an abundant number, since it is smaller than the sum of its proper divisors (46145640).

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

22801560 is a wasteful number, since it uses less digits than its factorization.

22801560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520 (or 1516 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 22801560 is about 4775.0979047555. The cubic root of 22801560 is about 283.5664548137.

The spelling of 22801560 in words is "twenty-two million, eight hundred one thousand, five hundred sixty".