22805540 has 24 divisors (see below), whose sum is σ = 47987520. Its totient is φ = 9103968.

The previous prime is 22805509. The next prime is 22805543. The reversal of 22805540 is 4550822.

It is not an unprimeable number, because it can be changed into a prime (22805543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14009 + ... + 15551.

It is an arithmetic number, because the mean of its divisors is an integer number (1999480).

Almost surely, 2^22805540 is an apocalyptic number.

22805540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22805540 is an abundant number, since it is smaller than the sum of its proper divisors (25181980).

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

22805540 is a wasteful number, since it uses less digits than its factorization.

22805540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291 (or 2289 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 22805540 is about 4775.5146319533. The cubic root of 22805540 is about 283.5829526444.

The spelling of 22805540 in words is "twenty-two million, eight hundred five thousand, five hundred forty".