23161400 has 24 divisors (see below), whose sum is σ = 53850720. Its totient is φ = 9264480.

The previous prime is 23161393. The next prime is 23161403. The reversal of 23161400 is 416132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23161403) 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, 57704 + ... + 58103.

It is an arithmetic number, because the mean of its divisors is an integer number (2243780).

Almost surely, 2^23161400 is an apocalyptic number.

23161400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23161400 is an abundant number, since it is smaller than the sum of its proper divisors (30689320).

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

23161400 is a wasteful number, since it uses less digits than its factorization.

23161400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115823 (or 115814 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 23161400 is about 4812.6292190444. The cubic root of 23161400 is about 285.0503655730.

Adding to 23161400 its reverse (416132), we get a palindrome (23577532).

The spelling of 23161400 in words is "twenty-three million, one hundred sixty-one thousand, four hundred".