23145400 has 24 divisors (see below), whose sum is σ = 53813520. Its totient is φ = 9258080.

The previous prime is 23145391. The next prime is 23145407. The reversal of 23145400 is 454132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23145407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57664 + ... + 58063.

It is an arithmetic number, because the mean of its divisors is an integer number (2242230).

Almost surely, 2^23145400 is an apocalyptic number.

23145400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23145400 is an abundant number, since it is smaller than the sum of its proper divisors (30668120).

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

23145400 is a wasteful number, since it uses less digits than its factorization.

23145400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115743 (or 115734 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 23145400 is about 4810.9666388367. The cubic root of 23145400 is about 284.9847124251.

Adding to 23145400 its reverse (454132), we get a palindrome (23599532).

The spelling of 23145400 in words is "twenty-three million, one hundred forty-five thousand, four hundred".