23013900 has 216 divisors, whose sum is σ = 89098464. Its totient is φ = 4838400.

The previous prime is 23013877. The next prime is 23013911. The reversal of 23013900 is 931032.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 81760 + ... + 82040.

Almost surely, 2^23013900 is an apocalyptic number.

23013900 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 23013900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44549232).

23013900 is an abundant number, since it is smaller than the sum of its proper divisors (66084564).

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

23013900 is a wasteful number, since it uses less digits than its factorization.

23013900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 311 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 23013900 is about 4797.2804796051. The cubic root of 23013900 is about 284.4439759423.

Adding to 23013900 its reverse (931032), we get a palindrome (23944932).

The spelling of 23013900 in words is "twenty-three million, thirteen thousand, nine hundred".