23140400 has 120 divisors (see below), whose sum is σ = 61027344. Its totient is φ = 8396800.

The previous prime is 23140399. The next prime is 23140409. The reversal of 23140400 is 404132.

It is a super-2 number, since 2×23140400² = 1070956224320000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23140409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 278759 + ... + 278841.

Almost surely, 2^23140400 is an apocalyptic number.

23140400 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 23140400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30513672).

23140400 is an abundant number, since it is smaller than the sum of its proper divisors (37886944).

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

23140400 is a wasteful number, since it uses less digits than its factorization.

23140400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 23140400 is about 4810.4469646801. The cubic root of 23140400 is about 284.9641896116.

Adding to 23140400 its reverse (404132), we get a palindrome (23544532).

The spelling of 23140400 in words is "twenty-three million, one hundred forty thousand, four hundred".