23540540 has 12 divisors (see below), whose sum is σ = 49435176. Its totient is φ = 9416208.

The previous prime is 23540521. The next prime is 23540567. The reversal of 23540540 is 4504532.

It is a super-3 number, since 3×23540540³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

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, 588494 + ... + 588533.

It is an arithmetic number, because the mean of its divisors is an integer number (4119598).

Almost surely, 2^23540540 is an apocalyptic number.

23540540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23540540 is an abundant number, since it is smaller than the sum of its proper divisors (25894636).

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

23540540 is a wasteful number, since it uses less digits than its factorization.

23540540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177036 (or 1177034 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 23540540 is about 4851.8594373704. The cubic root of 23540540 is about 286.5973301451.

The spelling of 23540540 in words is "twenty-three million, five hundred forty thousand, five hundred forty".