23535040 has 28 divisors (see below), whose sum is σ = 56043576. Its totient is φ = 9413888.

The previous prime is 23535019. The next prime is 23535059. The reversal of 23535040 is 4053532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36454 + ... + 37093.

Almost surely, 2^23535040 is an apocalyptic number.

23535040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23535040 is an abundant number, since it is smaller than the sum of its proper divisors (32508536).

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

23535040 is an equidigital number, since it uses as much as digits as its factorization.

23535040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73564 (or 73554 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 22.

The square root of 23535040 is about 4851.2926112532. The cubic root of 23535040 is about 286.5750082542.

Adding to 23535040 its reverse (4053532), we get a palindrome (27588572).

The spelling of 23535040 in words is "twenty-three million, five hundred thirty-five thousand, forty".