22453956 has 72 divisors (see below), whose sum is σ = 67734240. Its totient is φ = 6413904.

The previous prime is 22453919. The next prime is 22453969. The reversal of 22453956 is 65935422.

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 22453956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3171 + ... + 7413.

Almost surely, 2^22453956 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 22453956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33867120).

22453956 is an abundant number, since it is smaller than the sum of its proper divisors (45280284).

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

22453956 is a wasteful number, since it uses less digits than its factorization.

22453956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270 (or 4255 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 22453956 is about 4738.5605409238. The cubic root of 22453956 is about 282.1181035409.

It can be divided in two parts, 22453 and 956, that added together give a square (23409 = 153²).

The spelling of 22453956 in words is "twenty-two million, four hundred fifty-three thousand, nine hundred fifty-six".