22540623 has 32 divisors (see below), whose sum is σ = 36781056. Its totient is φ = 11985408.

The previous prime is 22540619. The next prime is 22540649. The reversal of 22540623 is 32604522.

It is not a de Polignac number, because 22540623 - 2² = 22540619 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22540593 and 22540602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36465 + ... + 37077.

It is an arithmetic number, because the mean of its divisors is an integer number (1149408).

Almost surely, 2^22540623 is an apocalyptic number.

22540623 is a deficient number, since it is larger than the sum of its proper divisors (14240433).

22540623 is a wasteful number, since it uses less digits than its factorization.

22540623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 22540623 is about 4747.6965994048. The cubic root of 22540623 is about 282.4806074348.

The spelling of 22540623 in words is "twenty-two million, five hundred forty thousand, six hundred twenty-three".