22887872 has 56 divisors (see below), whose sum is σ = 53059584. Its totient is φ = 9591552.

The previous prime is 22887857. The next prime is 22887901. The reversal of 22887872 is 27878822.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 20513 + ... + 21599.

Almost surely, 2^22887872 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 22887872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26529792).

22887872 is an abundant number, since it is smaller than the sum of its proper divisors (30171712).

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

22887872 is a wasteful number, since it uses less digits than its factorization.

22887872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153 (or 1143 counting only the distinct ones).

The product of its digits is 200704, while the sum is 44.

The square root of 22887872 is about 4784.1270886129. The cubic root of 22887872 is about 283.9238041968.

The spelling of 22887872 in words is "twenty-two million, eight hundred eighty-seven thousand, eight hundred seventy-two".