22540342 has 16 divisors (see below), whose sum is σ = 37743552. Its totient is φ = 10006920.

The previous prime is 22540339. The next prime is 22540361. The reversal of 22540342 is 24304522.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10968 + ... + 12859.

It is an arithmetic number, because the mean of its divisors is an integer number (2358972).

Almost surely, 2^22540342 is an apocalyptic number.

22540342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22540342 is a deficient number, since it is larger than the sum of its proper divisors (15203210).

22540342 is a wasteful number, since it uses less digits than its factorization.

22540342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23883.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 22540342 is about 4747.6670060146. The cubic root of 22540342 is about 282.4794335930.

Adding to 22540342 its reverse (24304522), we get a palindrome (46844864).

The spelling of 22540342 in words is "twenty-two million, five hundred forty thousand, three hundred forty-two".