22852640 has 48 divisors (see below), whose sum is σ = 54309528. Its totient is φ = 9086976.

The previous prime is 22852637. The next prime is 22852657. The reversal of 22852640 is 4625822.

It can be written as a sum of positive squares in 4 ways, for example, as 6948496 + 15904144 = 2636^2 + 3988^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36974 + ... + 37586.

Almost surely, 2^22852640 is an apocalyptic number.

22852640 is a gapful number since it is divisible by the number (20) 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 22852640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27154764).

22852640 is an abundant number, since it is smaller than the sum of its proper divisors (31456888).

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

22852640 is a wasteful number, since it uses less digits than its factorization.

22852640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 853 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 22852640 is about 4780.4434940704. The cubic root of 22852640 is about 283.7780451880.

The spelling of 22852640 in words is "twenty-two million, eight hundred fifty-two thousand, six hundred forty".