22636448 has 48 divisors (see below), whose sum is σ = 48464640. Its totient is φ = 10368000.

The previous prime is 22636409. The next prime is 22636457. The reversal of 22636448 is 84463622.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18248 + ... + 19448.

It is an arithmetic number, because the mean of its divisors is an integer number (1009680).

Almost surely, 2^22636448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22636448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24232320).

22636448 is an abundant number, since it is smaller than the sum of its proper divisors (25828192).

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

22636448 is a wasteful number, since it uses less digits than its factorization.

22636448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261 (or 1253 counting only the distinct ones).

The product of its digits is 55296, while the sum is 35.

The square root of 22636448 is about 4757.7776324667. Note that the first 3 decimals coincide. The cubic root of 22636448 is about 282.8803366447.

The spelling of 22636448 in words is "twenty-two million, six hundred thirty-six thousand, four hundred forty-eight".