22642704 has 90 divisors (see below), whose sum is σ = 73736910. Its totient is φ = 6467328.

The previous prime is 22642687. The next prime is 22642709. The reversal of 22642704 is 40724622.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19820304 + 2822400 = 4452^2 + 1680^2 .

It is not an unprimeable number, because it can be changed into a prime (22642709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5452 + ... + 8660.

It is an arithmetic number, because the mean of its divisors is an integer number (819299).

Almost surely, 2^22642704 is an apocalyptic number.

22642704 is a gapful number since it is divisible by the number (24) 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 22642704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36868455).

22642704 is an abundant number, since it is smaller than the sum of its proper divisors (51094206).

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

22642704 is a wasteful number, since it uses less digits than its factorization.

22642704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237 (or 3221 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 22642704 is about 4758.4350368582. The cubic root of 22642704 is about 282.9063939776.

The spelling of 22642704 in words is "twenty-two million, six hundred forty-two thousand, seven hundred four".