23389340 has 24 divisors (see below), whose sum is σ = 52896480. Its totient is φ = 8635968.

The previous prime is 23389339. The next prime is 23389349. The reversal of 23389340 is 4398332.

It is a happy number.

It is a super-2 number, since 2×23389340² = 1094122451271200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23389297 and 23389306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23389349) 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, 44720 + ... + 45239.

It is an arithmetic number, because the mean of its divisors is an integer number (2204020).

Almost surely, 2^23389340 is an apocalyptic number.

23389340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23389340 is an abundant number, since it is smaller than the sum of its proper divisors (29507140).

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

23389340 is a wasteful number, since it uses less digits than its factorization.

23389340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89981 (or 89979 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 23389340 is about 4836.2526815707. The cubic root of 23389340 is about 285.9824104461.

The spelling of 23389340 in words is "twenty-three million, three hundred eighty-nine thousand, three hundred forty".