23345140 has 96 divisors (see below), whose sum is σ = 61415424. Its totient is φ = 7257600.

The previous prime is 23345137. The next prime is 23345141. The reversal of 23345140 is 4154332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23345141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 183757 + ... + 183883.

It is an arithmetic number, because the mean of its divisors is an integer number (639744).

Almost surely, 2^23345140 is an apocalyptic number.

23345140 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 23345140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30707712).

23345140 is an abundant number, since it is smaller than the sum of its proper divisors (38070284).

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

23345140 is a wasteful number, since it uses less digits than its factorization.

23345140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 23345140 is about 4831.6808669448. The cubic root of 23345140 is about 285.8021517852.

Adding to 23345140 its reverse (4154332), we get a palindrome (27499472).

The spelling of 23345140 in words is "twenty-three million, three hundred forty-five thousand, one hundred forty".