22445860 has 48 divisors (see below), whose sum is σ = 49900032. Its totient is φ = 8467200.

The previous prime is 22445849. The next prime is 22445867. The reversal of 22445860 is 6854422.

It is a super-2 number, since 2×22445860² = 1007633262279200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22445867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24979 + ... + 25861.

It is an arithmetic number, because the mean of its divisors is an integer number (1039584).

Almost surely, 2^22445860 is an apocalyptic number.

22445860 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 22445860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24950016).

22445860 is an abundant number, since it is smaller than the sum of its proper divisors (27454172).

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

22445860 is a wasteful number, since it uses less digits than its factorization.

22445860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 22445860 is about 4737.7061960404. The cubic root of 22445860 is about 282.0841926237.

The spelling of 22445860 in words is "twenty-two million, four hundred forty-five thousand, eight hundred sixty".