22045040 has 40 divisors (see below), whose sum is σ = 53487648. Its totient is φ = 8433920.

The previous prime is 22044991. The next prime is 22045087. The reversal of 22045040 is 4054022.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

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, 4151 + ... + 7830.

Almost surely, 2^22045040 is an apocalyptic number.

22045040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22045040 is an abundant number, since it is smaller than the sum of its proper divisors (31442608).

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

22045040 is a wasteful number, since it uses less digits than its factorization.

22045040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12017 (or 12011 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22045040 is about 4695.2145850855. The cubic root of 22045040 is about 280.3950206787.

Adding to 22045040 its reverse (4054022), we get a palindrome (26099062).

The spelling of 22045040 in words is "twenty-two million, forty-five thousand, forty".