23475540 has 48 divisors (see below), whose sum is σ = 71709120. Its totient is φ = 5690880.

The previous prime is 23475539. The next prime is 23475541. The reversal of 23475540 is 4557432.

It is an interprime number because it is at equal distance from previous prime (23475539) and next prime (23475541).

It is a super-2 number, since 2×23475540² = 1102201956583200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23475498 and 23475507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23475541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17125 + ... + 18444.

It is an arithmetic number, because the mean of its divisors is an integer number (1493940).

Almost surely, 2^23475540 is an apocalyptic number.

23475540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23475540 is an abundant number, since it is smaller than the sum of its proper divisors (48233580).

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

23475540 is a wasteful number, since it uses less digits than its factorization.

23475540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35592 (or 35590 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 23475540 is about 4845.1563442267. The cubic root of 23475540 is about 286.3333033676. Note that the first 4 decimals are identical.

It can be divided in two parts, 2347 and 5540, that added together give a palindrome (7887).

The spelling of 23475540 in words is "twenty-three million, four hundred seventy-five thousand, five hundred forty".