22604740 has 12 divisors (see below), whose sum is σ = 47469996. Its totient is φ = 9041888.

The previous prime is 22604723. The next prime is 22604741. The reversal of 22604740 is 4740622.

It can be written as a sum of positive squares in 2 ways, for example, as 15507844 + 7096896 = 3938^2 + 2664^2 .

It is not an unprimeable number, because it can be changed into a prime (22604741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565099 + ... + 565138.

It is an arithmetic number, because the mean of its divisors is an integer number (3955833).

Almost surely, 2^22604740 is an apocalyptic number.

22604740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22604740 is an abundant number, since it is smaller than the sum of its proper divisors (24865256).

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

22604740 is a wasteful number, since it uses less digits than its factorization.

22604740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130246 (or 1130244 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 22604740 is about 4754.4442367116. Note that the first 3 decimals coincide. The cubic root of 22604740 is about 282.7481934006.

The spelling of 22604740 in words is "twenty-two million, six hundred four thousand, seven hundred forty".