23236720 has 40 divisors (see below), whose sum is σ = 58183776. Its totient is φ = 8579328.

The previous prime is 23236687. The next prime is 23236721. The reversal of 23236720 is 2763232.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23236721) 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, 10132 + ... + 12211.

Almost surely, 2^23236720 is an apocalyptic number.

23236720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23236720 is an abundant number, since it is smaller than the sum of its proper divisors (34947056).

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

23236720 is a wasteful number, since it uses less digits than its factorization.

23236720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22369 (or 22363 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 23236720 is about 4820.4481119498. The cubic root of 23236720 is about 285.3590222502.

Adding to 23236720 its reverse (2763232), we get a palindrome (25999952).

The spelling of 23236720 in words is "twenty-three million, two hundred thirty-six thousand, seven hundred twenty".