23245540 has 12 divisors (see below), whose sum is σ = 48815676. Its totient is φ = 9298208.

The previous prime is 23245529. The next prime is 23245553. The reversal of 23245540 is 4554232.

It can be written as a sum of positive squares in 2 ways, for example, as 15539364 + 7706176 = 3942^2 + 2776^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581119 + ... + 581158.

It is an arithmetic number, because the mean of its divisors is an integer number (4067973).

Almost surely, 2^23245540 is an apocalyptic number.

23245540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23245540 is an abundant number, since it is smaller than the sum of its proper divisors (25570136).

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

23245540 is a wasteful number, since it uses less digits than its factorization.

23245540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1162286 (or 1162284 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 23245540 is about 4821.3628778593. The cubic root of 23245540 is about 285.3951224140.

Adding to 23245540 its reverse (4554232), we get a palindrome (27799772).

The spelling of 23245540 in words is "twenty-three million, two hundred forty-five thousand, five hundred forty".