23140544 has 84 divisors (see below), whose sum is σ = 54900576. Its totient is φ = 9644544.

The previous prime is 23140531. The next prime is 23140571. The reversal of 23140544 is 44504132.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147314 + ... + 147470.

Almost surely, 2^23140544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23140544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27450288).

23140544 is an abundant number, since it is smaller than the sum of its proper divisors (31760032).

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

23140544 is a wasteful number, since it uses less digits than its factorization.

23140544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 23140544 is about 4810.4619320810. The cubic root of 23140544 is about 284.9647807100.

Adding to 23140544 its reverse (44504132), we get a palindrome (67644676).

The spelling of 23140544 in words is "twenty-three million, one hundred forty thousand, five hundred forty-four".