22604540 has 24 divisors (see below), whose sum is σ = 54251232. Its totient is φ = 7750080.

The previous prime is 22604539. The next prime is 22604551. The reversal of 22604540 is 4540622.

It is a super-2 number, since 2×22604540² = 1021930457223200, which contains 22 as substring.

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, 80591 + ... + 80870.

It is an arithmetic number, because the mean of its divisors is an integer number (2260468).

Almost surely, 2^22604540 is an apocalyptic number.

22604540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22604540 is an abundant number, since it is smaller than the sum of its proper divisors (31646692).

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

22604540 is a wasteful number, since it uses less digits than its factorization.

22604540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161477 (or 161475 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 22604540 is about 4754.4232037125. The cubic root of 22604540 is about 282.7473595076.

The spelling of 22604540 in words is "twenty-two million, six hundred four thousand, five hundred forty".