23173900 has 72 divisors (see below), whose sum is σ = 53277840. Its totient is φ = 8736000.

The previous prime is 23173889. The next prime is 23173933. The reversal of 23173900 is 937132.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 176835 + ... + 176965.

It is an arithmetic number, because the mean of its divisors is an integer number (739970).

Almost surely, 2^23173900 is an apocalyptic number.

23173900 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 23173900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26638920).

23173900 is an abundant number, since it is smaller than the sum of its proper divisors (30103940).

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

23173900 is a wasteful number, since it uses less digits than its factorization.

23173900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 23173900 is about 4813.9277103006. The cubic root of 23173900 is about 285.1016360599.

The spelling of 23173900 in words is "twenty-three million, one hundred seventy-three thousand, nine hundred".