23668340 has 24 divisors (see below), whose sum is σ = 50199912. Its totient is φ = 9372800.

The previous prime is 23668339. The next prime is 23668343. The reversal of 23668340 is 4386632.

It can be written as a sum of positive squares in 4 ways, for example, as 1503076 + 22165264 = 1226^2 + 4708^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23668297 and 23668306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23668343) 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, 3839 + ... + 7878.

It is an arithmetic number, because the mean of its divisors is an integer number (2091663).

Almost surely, 2^23668340 is an apocalyptic number.

23668340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23668340 is an abundant number, since it is smaller than the sum of its proper divisors (26531572).

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

23668340 is a wasteful number, since it uses less digits than its factorization.

23668340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11827 (or 11825 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 23668340 is about 4865.0118191018. The cubic root of 23668340 is about 287.1150335891.

The spelling of 23668340 in words is "twenty-three million, six hundred sixty-eight thousand, three hundred forty".