22445480 has 32 divisors (see below), whose sum is σ = 51148800. Its totient is φ = 8863296.

The previous prime is 22445473. The next prime is 22445483. The reversal of 22445480 is 8454422.

It is not an unprimeable number, because it can be changed into a prime (22445483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392 + ... + 6711.

It is an arithmetic number, because the mean of its divisors is an integer number (1598400).

Almost surely, 2^22445480 is an apocalyptic number.

22445480 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 22445480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25574400).

22445480 is an abundant number, since it is smaller than the sum of its proper divisors (28703320).

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

22445480 is a wasteful number, since it uses less digits than its factorization.

22445480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7193 (or 7189 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 22445480 is about 4737.6660920753. Note that the first 3 decimals coincide. The cubic root of 22445480 is about 282.0826007548.

The spelling of 22445480 in words is "twenty-two million, four hundred forty-five thousand, four hundred eighty".