23523400 has 24 divisors (see below), whose sum is σ = 54692370. Its totient is φ = 9409280.

The previous prime is 23523397. The next prime is 23523403. The reversal of 23523400 is 432532.

It is an interprime number because it is at equal distance from previous prime (23523397) and next prime (23523403).

It can be written as a sum of positive squares in 3 ways, for example, as 8608356 + 14915044 = 2934^2 + 3862^2 .

It is not an unprimeable number, because it can be changed into a prime (23523403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58609 + ... + 59008.

Almost surely, 2^23523400 is an apocalyptic number.

23523400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23523400 is an abundant number, since it is smaller than the sum of its proper divisors (31168970).

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

23523400 is a wasteful number, since it uses less digits than its factorization.

23523400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117633 (or 117624 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 23523400 is about 4850.0927826177. The cubic root of 23523400 is about 286.5277555454.

Adding to 23523400 its reverse (432532), we get a palindrome (23955932).

The spelling of 23523400 in words is "twenty-three million, five hundred twenty-three thousand, four hundred".