22977552 has 80 divisors (see below), whose sum is σ = 66745728. Its totient is φ = 6758400.

The previous prime is 22977547. The next prime is 22977569. The reversal of 22977552 is 25577922.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 22977552.

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 15 ways as a sum of consecutive naturals, for example, 13552 + ... + 15152.

Almost surely, 2^22977552 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 22977552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33372864).

22977552 is an abundant number, since it is smaller than the sum of its proper divisors (43768176).

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

22977552 is a wasteful number, since it uses less digits than its factorization.

22977552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648 (or 1642 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 22977552 is about 4793.4905862012. The cubic root of 22977552 is about 284.2941473964.

The spelling of 22977552 in words is "twenty-two million, nine hundred seventy-seven thousand, five hundred fifty-two".