23152540 has 12 divisors (see below), whose sum is σ = 48620376. Its totient is φ = 9261008.

The previous prime is 23152523. The next prime is 23152543. The reversal of 23152540 is 4525132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23152543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578794 + ... + 578833.

It is an arithmetic number, because the mean of its divisors is an integer number (4051698).

Almost surely, 2^23152540 is an apocalyptic number.

23152540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23152540 is an abundant number, since it is smaller than the sum of its proper divisors (25467836).

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

23152540 is a wasteful number, since it uses less digits than its factorization.

23152540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157636 (or 1157634 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 23152540 is about 4811.7086362331. The cubic root of 23152540 is about 285.0140138795.

Adding to 23152540 its reverse (4525132), we get a palindrome (27677672).

It can be divided in two parts, 231525 and 40, that multiplied together give a cube (9261000 = 210³).

The spelling of 23152540 in words is "twenty-three million, one hundred fifty-two thousand, five hundred forty".