22704540 has 48 divisors (see below), whose sum is σ = 63891072. Its totient is φ = 6024256.

The previous prime is 22704509. The next prime is 22704541. The reversal of 22704540 is 4540722.

It is a super-2 number, since 2×22704540² = 1030992273223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22704540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22704541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12787 + ... + 14453.

It is an arithmetic number, because the mean of its divisors is an integer number (1331064).

Almost surely, 2^22704540 is an apocalyptic number.

22704540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22704540 is an abundant number, since it is smaller than the sum of its proper divisors (41186532).

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

22704540 is a wasteful number, since it uses less digits than its factorization.

22704540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1906 (or 1904 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 22704540 is about 4764.9281211787. The cubic root of 22704540 is about 283.1636939158.

The spelling of 22704540 in words is "twenty-two million, seven hundred four thousand, five hundred forty".