22917140 has 24 divisors (see below), whose sum is σ = 48498912. Its totient is φ = 9095840.

The previous prime is 22917121. The next prime is 22917143. The reversal of 22917140 is 4171922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22917143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1754 + ... + 6993.

It is an arithmetic number, because the mean of its divisors is an integer number (2020788).

Almost surely, 2^22917140 is an apocalyptic number.

22917140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22917140 is an abundant number, since it is smaller than the sum of its proper divisors (25581772).

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

22917140 is a wasteful number, since it uses less digits than its factorization.

22917140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8887 (or 8885 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 22917140 is about 4787.1849765807. The cubic root of 22917140 is about 284.0447757214.

The spelling of 22917140 in words is "twenty-two million, nine hundred seventeen thousand, one hundred forty".