23400400 has 60 divisors (see below), whose sum is σ = 59197600. Its totient is φ = 8864640.

The previous prime is 23400397. The next prime is 23400413. The reversal of 23400400 is 400432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6061 + ... + 9139.

Almost surely, 2^23400400 is an apocalyptic number.

23400400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23400400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29598800).

23400400 is an abundant number, since it is smaller than the sum of its proper divisors (35797200).

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

23400400 is a wasteful number, since it uses less digits than its factorization.

23400400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3116 (or 3105 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 23400400 is about 4837.3959937140. The cubic root of 23400400 is about 286.0274803660.

Adding to 23400400 its reverse (400432), we get a palindrome (23800832).

The spelling of 23400400 in words is "twenty-three million, four hundred thousand, four hundred".