23623540 has 24 divisors (see below), whose sum is σ = 52528392. Its totient is φ = 8893440.

The previous prime is 23623529. The next prime is 23623549. The reversal of 23623540 is 4532632.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4210704 + 19412836 = 2052^2 + 4406^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23623549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34401 + ... + 35080.

It is an arithmetic number, because the mean of its divisors is an integer number (2188683).

Almost surely, 2^23623540 is an apocalyptic number.

23623540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23623540 is an abundant number, since it is smaller than the sum of its proper divisors (28904852).

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

23623540 is a wasteful number, since it uses less digits than its factorization.

23623540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69507 (or 69505 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 23623540 is about 4860.4053328915. The cubic root of 23623540 is about 286.9337664380.

The spelling of 23623540 in words is "twenty-three million, six hundred twenty-three thousand, five hundred forty".