23507320 has 32 divisors (see below), whose sum is σ = 53071200. Its totient is φ = 9371008.

The previous prime is 23507317. The next prime is 23507327. The reversal of 23507320 is 2370532.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23507291 and 23507300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23507327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13542 + ... + 15178.

It is an arithmetic number, because the mean of its divisors is an integer number (1658475).

Almost surely, 2^23507320 is an apocalyptic number.

23507320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23507320 is an abundant number, since it is smaller than the sum of its proper divisors (29563880).

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

23507320 is a wasteful number, since it uses less digits than its factorization.

23507320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2007 (or 2003 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 23507320 is about 4848.4347989841. The cubic root of 23507320 is about 286.4624529597.

Adding to 23507320 its reverse (2370532), we get a palindrome (25877852).

The spelling of 23507320 in words is "twenty-three million, five hundred seven thousand, three hundred twenty".