22865040 has 120 divisors (see below), whose sum is σ = 83798208. Its totient is φ = 5541120.

The previous prime is 22865027. The next prime is 22865041. The reversal of 22865040 is 4056822.

22865040 is a `hidden beast` number, since 2 + 2 + 8 + 650 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 22864995 and 22865013.

It is not an unprimeable number, because it can be changed into a prime (22865041) 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 23 ways as a sum of consecutive naturals, for example, 6477 + ... + 9363.

Almost surely, 2^22865040 is an apocalyptic number.

22865040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22865040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41899104).

22865040 is an abundant number, since it is smaller than the sum of its proper divisors (60933168).

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

22865040 is a wasteful number, since it uses less digits than its factorization.

22865040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2917 (or 2908 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 22865040 is about 4781.7402689816. The cubic root of 22865040 is about 283.8293625486.

The spelling of 22865040 in words is "twenty-two million, eight hundred sixty-five thousand, forty".