22575640 has 16 divisors (see below), whose sum is σ = 50795280. Its totient is φ = 9030240.

The previous prime is 22575613. The next prime is 22575649. The reversal of 22575640 is 4657522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22575649) 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 3 ways as a sum of consecutive naturals, for example, 282156 + ... + 282235.

It is an arithmetic number, because the mean of its divisors is an integer number (3174705).

Almost surely, 2^22575640 is an apocalyptic number.

22575640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22575640 is an abundant number, since it is smaller than the sum of its proper divisors (28219640).

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

22575640 is a wasteful number, since it uses less digits than its factorization.

22575640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564402 (or 564398 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 22575640 is about 4751.3829565717. The cubic root of 22575640 is about 282.6268102204.

It can be divided in two parts, 22575 and 640, that multiplied together give a triangular number (14448000 = T₅₃₇₅).

The spelling of 22575640 in words is "twenty-two million, five hundred seventy-five thousand, six hundred forty".