22540168 has 16 divisors (see below), whose sum is σ = 48300480. Its totient is φ = 9660048.

The previous prime is 22540153. The next prime is 22540169. The reversal of 22540168 is 86104522.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (22540169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201196 + ... + 201307.

It is an arithmetic number, because the mean of its divisors is an integer number (3018780).

Almost surely, 2^22540168 is an apocalyptic number.

22540168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22540168 is an abundant number, since it is smaller than the sum of its proper divisors (25760312).

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

22540168 is a wasteful number, since it uses less digits than its factorization.

22540168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402516 (or 402512 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 22540168 is about 4747.6486811895. The cubic root of 22540168 is about 282.4787067251.

The spelling of 22540168 in words is "twenty-two million, five hundred forty thousand, one hundred sixty-eight".