22738940 has 36 divisors (see below), whose sum is σ = 55550376. Its totient is φ = 7795872.

The previous prime is 22738921. The next prime is 22738943. The reversal of 22738940 is 4983722.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 22738940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22738943) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10622 + ... + 12581.

It is an arithmetic number, because the mean of its divisors is an integer number (1543066).

Almost surely, 2^22738940 is an apocalyptic number.

22738940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22738940 is an abundant number, since it is smaller than the sum of its proper divisors (32811436).

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

22738940 is a wasteful number, since it uses less digits than its factorization.

22738940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23226 (or 23217 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 22738940 is about 4768.5364631090. The cubic root of 22738940 is about 283.3066303170.

The spelling of 22738940 in words is "twenty-two million, seven hundred thirty-eight thousand, nine hundred forty".