23403320 has 32 divisors (see below), whose sum is σ = 52805520. Its totient is φ = 9335040.

The previous prime is 23403313. The next prime is 23403329. The reversal of 23403320 is 2330432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23403329) 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, 20279 + ... + 21401.

Almost surely, 2^23403320 is an apocalyptic number.

23403320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23403320 is an abundant number, since it is smaller than the sum of its proper divisors (29402200).

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

23403320 is a wasteful number, since it uses less digits than its factorization.

23403320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655 (or 1651 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 23403320 is about 4837.6977995737. The cubic root of 23403320 is about 286.0393771071.

Adding to 23403320 its reverse (2330432), we get a palindrome (25733752).

The spelling of 23403320 in words is "twenty-three million, four hundred three thousand, three hundred twenty".