22856544 has 72 divisors (see below), whose sum is σ = 68435640. Its totient is φ = 7216128.

The previous prime is 22856539. The next prime is 22856567. The reversal of 22856544 is 44565822.

It is a happy number.

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 = 22856499 and 22856508.

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, 3384 + ... + 7560.

It is an arithmetic number, because the mean of its divisors is an integer number (950495).

Almost surely, 2^22856544 is an apocalyptic number.

22856544 is a gapful number since it is divisible by the number (24) 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 22856544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34217820).

22856544 is an abundant number, since it is smaller than the sum of its proper divisors (45579096).

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

22856544 is a wasteful number, since it uses less digits than its factorization.

22856544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4212 (or 4201 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 22856544 is about 4780.8518069482. The cubic root of 22856544 is about 283.7942038814.

The spelling of 22856544 in words is "twenty-two million, eight hundred fifty-six thousand, five hundred forty-four".