23189400 has 144 divisors (see below), whose sum is σ = 83952960. Its totient is φ = 5702400.

The previous prime is 23189393. The next prime is 23189401. The reversal of 23189400 is 498132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23189401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22905 + ... + 23895.

Almost surely, 2^23189400 is an apocalyptic number.

23189400 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 23189400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41976480).

23189400 is an abundant number, since it is smaller than the sum of its proper divisors (60763560).

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

23189400 is a wasteful number, since it uses less digits than its factorization.

23189400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026 (or 1014 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 23189400 is about 4815.5373531933. The cubic root of 23189400 is about 285.1651858650.

The spelling of 23189400 in words is "twenty-three million, one hundred eighty-nine thousand, four hundred".