23290720 has 48 divisors (see below), whose sum is σ = 57425760. Its totient is φ = 8909824.

The previous prime is 23290711. The next prime is 23290721. The reversal of 23290720 is 2709232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23290721) 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 7 ways as a sum of consecutive naturals, for example, 516 + ... + 6844.

It is an arithmetic number, because the mean of its divisors is an integer number (1196370).

Almost surely, 2^23290720 is an apocalyptic number.

23290720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23290720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28712880).

23290720 is an abundant number, since it is smaller than the sum of its proper divisors (34135040).

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

23290720 is a wasteful number, since it uses less digits than its factorization.

23290720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6367 (or 6359 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 23290720 is about 4826.0460006096. The cubic root of 23290720 is about 285.5799006117.

Adding to 23290720 its reverse (2709232), we get a palindrome (25999952).

The spelling of 23290720 in words is "twenty-three million, two hundred ninety thousand, seven hundred twenty".