22356864 has 64 divisors (see below), whose sum is σ = 65994000. Its totient is φ = 7451136.

The previous prime is 22356827. The next prime is 22356869. The reversal of 22356864 is 46865322.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22356869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222 + ... + 6690.

Almost surely, 2^22356864 is an apocalyptic number.

22356864 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 22356864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32997000).

22356864 is an abundant number, since it is smaller than the sum of its proper divisors (43637136).

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

22356864 is an equidigital number, since it uses as much as digits as its factorization.

22356864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492 (or 6474 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 22356864 is about 4728.3045587187. The cubic root of 22356864 is about 281.7108852223.

It can be divided in two parts, 22356 and 864, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 22356864 in words is "twenty-two million, three hundred fifty-six thousand, eight hundred sixty-four".