23116140 has 72 divisors (see below), whose sum is σ = 70630560. Its totient is φ = 6119424.

The previous prime is 23116123. The next prime is 23116193. The reversal of 23116140 is 4161132.

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 23 ways as a sum of consecutive naturals, for example, 29676 + ... + 30444.

It is an arithmetic number, because the mean of its divisors is an integer number (980980).

Almost surely, 2^23116140 is an apocalyptic number.

23116140 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 23116140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35315280).

23116140 is an abundant number, since it is smaller than the sum of its proper divisors (47514420).

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

23116140 is a wasteful number, since it uses less digits than its factorization.

23116140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 951 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 23116140 is about 4807.9247082291. The cubic root of 23116140 is about 284.8645709281.

Adding to 23116140 its reverse (4161132), we get a palindrome (27277272).

The spelling of 23116140 in words is "twenty-three million, one hundred sixteen thousand, one hundred forty".