22676640 has 192 divisors, whose sum is σ = 86655744. Its totient is φ = 4866048.

The previous prime is 22676639. The next prime is 22676653. The reversal of 22676640 is 4667622.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56922 + ... + 57318.

It is an arithmetic number, because the mean of its divisors is an integer number (451332).

Almost surely, 2^22676640 is an apocalyptic number.

22676640 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 22676640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43327872).

22676640 is an abundant number, since it is smaller than the sum of its proper divisors (63979104).

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

22676640 is a wasteful number, since it uses less digits than its factorization.

22676640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 431 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 22676640 is about 4761.9995800084. Note that the first 3 decimals coincide. The cubic root of 22676640 is about 283.0476597761.

The spelling of 22676640 in words is "twenty-two million, six hundred seventy-six thousand, six hundred forty".