22859640 has 48 divisors (see below), whose sum is σ = 74295000. Its totient is φ = 6095808.

The previous prime is 22859593. The next prime is 22859647. The reversal of 22859640 is 4695822.

It is a happy number.

22859640 is a `hidden beast` number, since 2 + 2 + 8 + 5 + 9 + 640 = 666.

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 = 22859595 and 22859604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22859647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31390 + ... + 32109.

Almost surely, 2^22859640 is an apocalyptic number.

22859640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22859640 is an abundant number, since it is smaller than the sum of its proper divisors (51435360).

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

22859640 is a wasteful number, since it uses less digits than its factorization.

22859640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63516 (or 63509 counting only the distinct ones).

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

The square root of 22859640 is about 4781.1755876562. The cubic root of 22859640 is about 283.8070169469.

The spelling of 22859640 in words is "twenty-two million, eight hundred fifty-nine thousand, six hundred forty".