23089720 has 32 divisors (see below), whose sum is σ = 52809120. Its totient is φ = 9083520.

The previous prime is 23089691. The next prime is 23089721. The reversal of 23089720 is 2798032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23089721) 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, 2292 + ... + 7171.

It is an arithmetic number, because the mean of its divisors is an integer number (1650285).

Almost surely, 2^23089720 is an apocalyptic number.

23089720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23089720 is an abundant number, since it is smaller than the sum of its proper divisors (29719400).

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

23089720 is a wasteful number, since it uses less digits than its factorization.

23089720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9535 (or 9531 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 23089720 is about 4805.1763755350. The cubic root of 23089720 is about 284.7560033349.

The spelling of 23089720 in words is "twenty-three million, eighty-nine thousand, seven hundred twenty".