23033520 has 60 divisors (see below), whose sum is σ = 77356656. Its totient is φ = 6142080.

The previous prime is 23033519. The next prime is 23033561. The reversal of 23033520 is 2533032.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23033493 and 23033502.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15276 + ... + 16715.

Almost surely, 2^23033520 is an apocalyptic number.

23033520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23033520 is an abundant number, since it is smaller than the sum of its proper divisors (54323136).

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

23033520 is a wasteful number, since it uses less digits than its factorization.

23033520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32010 (or 32001 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 18.

The square root of 23033520 is about 4799.3249525324. The cubic root of 23033520 is about 284.5247851581.

Adding to 23033520 its reverse (2533032), we get a palindrome (25566552).

The spelling of 23033520 in words is "twenty-three million, thirty-three thousand, five hundred twenty".