23140120 has 16 divisors (see below), whose sum is σ = 52065360. Its totient is φ = 9256032.

The previous prime is 23140109. The next prime is 23140123. The reversal of 23140120 is 2104132.

It is a super-2 number, since 2×23140120² = 1070930307228800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23140120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23140123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289212 + ... + 289291.

It is an arithmetic number, because the mean of its divisors is an integer number (3254085).

Almost surely, 2^23140120 is an apocalyptic number.

23140120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23140120 is an abundant number, since it is smaller than the sum of its proper divisors (28925240).

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

23140120 is a wasteful number, since it uses less digits than its factorization.

23140120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578514 (or 578510 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 23140120 is about 4810.4178612674. The cubic root of 23140120 is about 284.9630402466.

Adding to 23140120 its reverse (2104132), we get a palindrome (25244252).

The spelling of 23140120 in words is "twenty-three million, one hundred forty thousand, one hundred twenty".