23800140 has 144 divisors (see below), whose sum is σ = 88915008. Its totient is φ = 5018112.

The previous prime is 23800111. The next prime is 23800151. The reversal of 23800140 is 4100832.

It is a happy number.

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 47 ways as a sum of consecutive naturals, for example, 15654 + ... + 17106.

Almost surely, 2^23800140 is an apocalyptic number.

23800140 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 23800140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44457504).

23800140 is an abundant number, since it is smaller than the sum of its proper divisors (65114868).

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

23800140 is a wasteful number, since it uses less digits than its factorization.

23800140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1483 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 23800140 is about 4878.5387156402. The cubic root of 23800140 is about 287.6469922562.

Adding to 23800140 its reverse (4100832), we get a palindrome (27900972).

The spelling of 23800140 in words is "twenty-three million, eight hundred thousand, one hundred forty".