22913856 has 84 divisors (see below), whose sum is σ = 75074272. Its totient is φ = 6545664.

The previous prime is 22913843. The next prime is 22913873. The reversal of 22913856 is 65831922.

It is a tau number, because it is divible by the number of its divisors (84).

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

It is a self number, because there is not a number n which added to its sum of digits gives 22913856.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1191 + ... + 6873.

Almost surely, 2^22913856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22913856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37537136).

22913856 is an abundant number, since it is smaller than the sum of its proper divisors (52160416).

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

22913856 is a wasteful number, since it uses less digits than its factorization.

22913856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5708 (or 5695 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 22913856 is about 4786.8419652209. The cubic root of 22913856 is about 284.0312073093.

The spelling of 22913856 in words is "twenty-two million, nine hundred thirteen thousand, eight hundred fifty-six".