23900340 has 24 divisors (see below), whose sum is σ = 66921120. Its totient is φ = 6373408.

The previous prime is 23900333. The next prime is 23900341. The reversal of 23900340 is 4300932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23900341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199110 + ... + 199229.

It is an arithmetic number, because the mean of its divisors is an integer number (2788380).

Almost surely, 2^23900340 is an apocalyptic number.

23900340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23900340 is an abundant number, since it is smaller than the sum of its proper divisors (43020780).

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

23900340 is a wasteful number, since it uses less digits than its factorization.

23900340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398351 (or 398349 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 23900340 is about 4888.7973981338. The cubic root of 23900340 is about 288.0500973808.

The spelling of 23900340 in words is "twenty-three million, nine hundred thousand, three hundred forty".