22879620 has 72 divisors (see below), whose sum is σ = 73493784. Its totient is φ = 5741568.

The previous prime is 22879613. The next prime is 22879639. The reversal of 22879620 is 2697822.

22879620 is a `hidden beast` number, since 2 + 28 + 7 + 9 + 620 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10810944 + 12068676 = 3288^2 + 3474^2 .

It is a super-2 number, since 2×22879620² = 1046954022688800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 679 + ... + 6798.

It is an arithmetic number, because the mean of its divisors is an integer number (1020747).

Almost surely, 2^22879620 is an apocalyptic number.

22879620 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 22879620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36746892).

22879620 is an abundant number, since it is smaller than the sum of its proper divisors (50614164).

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

22879620 is a wasteful number, since it uses less digits than its factorization.

22879620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7509 (or 7504 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 22879620 is about 4783.2645755802. The cubic root of 22879620 is about 283.8896781050.

The spelling of 22879620 in words is "twenty-two million, eight hundred seventy-nine thousand, six hundred twenty".