22064840 has 32 divisors (see below), whose sum is σ = 56738880. Its totient is φ = 7564992.

The previous prime is 22064813. The next prime is 22064849. The reversal of 22064840 is 4846022.

It is not an unprimeable number, because it can be changed into a prime (22064849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39122 + ... + 39681.

It is an arithmetic number, because the mean of its divisors is an integer number (1773090).

Almost surely, 2^22064840 is an apocalyptic number.

22064840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22064840 is an abundant number, since it is smaller than the sum of its proper divisors (34674040).

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

22064840 is a wasteful number, since it uses less digits than its factorization.

22064840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78821 (or 78817 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 22064840 is about 4697.3226416758. The cubic root of 22064840 is about 280.4789422033.

The spelling of 22064840 in words is "twenty-two million, sixty-four thousand, eight hundred forty".