22338740 has 12 divisors (see below), whose sum is σ = 46911396. Its totient is φ = 8935488.

The previous prime is 22338739. The next prime is 22338761. The reversal of 22338740 is 4783322.

It can be written as a sum of positive squares in 2 ways, for example, as 12124324 + 10214416 = 3482^2 + 3196^2 .

It is a congruent number.

It is an unprimeable number.

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, 558449 + ... + 558488.

It is an arithmetic number, because the mean of its divisors is an integer number (3909283).

Almost surely, 2^22338740 is an apocalyptic number.

22338740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22338740 is an abundant number, since it is smaller than the sum of its proper divisors (24572656).

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

22338740 is a wasteful number, since it uses less digits than its factorization.

22338740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116946 (or 1116944 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 22338740 is about 4726.3876269303. The cubic root of 22338740 is about 281.6347399516.

The spelling of 22338740 in words is "twenty-two million, three hundred thirty-eight thousand, seven hundred forty".