22871844 has 54 divisors (see below), whose sum is σ = 60488246. Its totient is φ = 7286400.

The previous prime is 22871803. The next prime is 22871861. The reversal of 22871844 is 44817822.

It can be written as a sum of positive squares in only one way, i.e., 11902500 + 10969344 = 3450^2 + 3312^2 .

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 = 22871799 and 22871808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18444 + ... + 19644.

Almost surely, 2^22871844 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 22871844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30244123).

22871844 is an abundant number, since it is smaller than the sum of its proper divisors (37616402).

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

22871844 is a wasteful number, since it uses less digits than its factorization.

22871844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257 (or 1229 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 22871844 is about 4782.4516725211. The cubic root of 22871844 is about 283.8575129981.

The spelling of 22871844 in words is "twenty-two million, eight hundred seventy-one thousand, eight hundred forty-four".