22712448 has 128 divisors (see below), whose sum is σ = 69523200. Its totient is φ = 6497280.

The previous prime is 22712447. The next prime is 22712489. The reversal of 22712448 is 84421722.

It is a tau number, because it is divible by the number of its divisors (128).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (22712441) 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, 80115 + ... + 80397.

It is an arithmetic number, because the mean of its divisors is an integer number (543150).

Almost surely, 2^22712448 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 22712448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34761600).

22712448 is an abundant number, since it is smaller than the sum of its proper divisors (46810752).

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

22712448 is a wasteful number, since it uses less digits than its factorization.

22712448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330 (or 318 counting only the distinct ones).

The product of its digits is 7168, while the sum is 30.

The square root of 22712448 is about 4765.7578620824. The cubic root of 22712448 is about 283.1965654408.

The spelling of 22712448 in words is "twenty-two million, seven hundred twelve thousand, four hundred forty-eight".