22815648 has 48 divisors (see below), whose sum is σ = 66548160. Its totient is φ = 7604928.

The previous prime is 22815629. The next prime is 22815673. The reversal of 22815648 is 84651822.

22815648 is a `hidden beast` number, since 2 + 2 + 8 + 1 + 5 + 648 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-3 number, since 3×22815648³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 12340 + ... + 14067.

It is an arithmetic number, because the mean of its divisors is an integer number (1386420).

Almost surely, 2^22815648 is an apocalyptic number.

It is an amenable number.

22815648 is an abundant number, since it is smaller than the sum of its proper divisors (43732512).

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

22815648 is a wasteful number, since it uses less digits than its factorization.

22815648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26426 (or 26412 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 22815648 is about 4776.5728299692. The cubic root of 22815648 is about 283.6248435343.

It can be divided in two parts, 228 and 15648, that added together give a square (15876 = 126²).

The spelling of 22815648 in words is "twenty-two million, eight hundred fifteen thousand, six hundred forty-eight".