23028720 has 240 divisors, whose sum is σ = 85890336. Its totient is φ = 5068800.

The previous prime is 23028713. The next prime is 23028739. The reversal of 23028720 is 2782032.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 377490 + ... + 377550.

Almost surely, 2^23028720 is an apocalyptic number.

23028720 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 23028720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42945168).

23028720 is an abundant number, since it is smaller than the sum of its proper divisors (62861616).

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

23028720 is a wasteful number, since it uses less digits than its factorization.

23028720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 23028720 is about 4798.8248561497. The cubic root of 23028720 is about 284.5050195607.

The spelling of 23028720 in words is "twenty-three million, twenty-eight thousand, seven hundred twenty".