22045504 has 28 divisors (see below), whose sum is σ = 47113444. Its totient is φ = 10174464.

The previous prime is 22045501. The next prime is 22045511. The reversal of 22045504 is 40554022.

It can be written as a sum of positive squares in 2 ways, for example, as 12110400 + 9935104 = 3480^2 + 3152^2 .

It is a super-2 number, since 2×22045504² = 972008493228032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22045501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12417 + ... + 14080.

It is an arithmetic number, because the mean of its divisors is an integer number (1682623).

Almost surely, 2^22045504 is an apocalyptic number.

It is an amenable number.

22045504 is an abundant number, since it is smaller than the sum of its proper divisors (25067940).

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

22045504 is a wasteful number, since it uses less digits than its factorization.

22045504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26522 (or 26512 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 22045504 is about 4695.2639968377. The cubic root of 22045504 is about 280.3969878994.

Adding to 22045504 its reverse (40554022), we get a palindrome (62599526).

The spelling of 22045504 in words is "twenty-two million, forty-five thousand, five hundred four".