22478652 has 54 divisors (see below), whose sum is σ = 66103128. Its totient is φ = 6421968.

The previous prime is 22478629. The next prime is 22478657. The reversal of 22478652 is 25687422.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22478657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4608 + ... + 8135.

It is an arithmetic number, because the mean of its divisors is an integer number (1224132).

Almost surely, 2^22478652 is an apocalyptic number.

It is an amenable number.

22478652 is an abundant number, since it is smaller than the sum of its proper divisors (43624476).

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

22478652 is a wasteful number, since it uses less digits than its factorization.

22478652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12767 (or 12755 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 22478652 is about 4741.1656794506. The cubic root of 22478652 is about 282.2214949130.

The spelling of 22478652 in words is "twenty-two million, four hundred seventy-eight thousand, six hundred fifty-two".