22695840 has 72 divisors (see below), whose sum is σ = 77454468. Its totient is φ = 6051840.

The previous prime is 22695839. The next prime is 22695853. The reversal of 22695840 is 4859622.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22695696 + 144 = 4764^2 + 12^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22695795 and 22695804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6441 + ... + 9320.

Almost surely, 2^22695840 is an apocalyptic number.

22695840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22695840 is an abundant number, since it is smaller than the sum of its proper divisors (54758628).

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

22695840 is a wasteful number, since it uses less digits than its factorization.

22695840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15782 (or 15771 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 22695840 is about 4764.0151133262. The cubic root of 22695840 is about 283.1275214313.

The spelling of 22695840 in words is "twenty-two million, six hundred ninety-five thousand, eight hundred forty".