23503280 has 20 divisors (see below), whose sum is σ = 54645312. Its totient is φ = 9401280.

The previous prime is 23503279. The next prime is 23503289. The reversal of 23503280 is 8230532.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (23503289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146816 + ... + 146975.

Almost surely, 2^23503280 is an apocalyptic number.

23503280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23503280 is an abundant number, since it is smaller than the sum of its proper divisors (31142032).

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

23503280 is a wasteful number, since it uses less digits than its factorization.

23503280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293804 (or 293798 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 23503280 is about 4848.0181517812. The cubic root of 23503280 is about 286.4460414105.

The spelling of 23503280 in words is "twenty-three million, five hundred three thousand, two hundred eighty".