23256020 has 48 divisors (see below), whose sum is σ = 50803200. Its totient is φ = 8935680.

The previous prime is 23256007. The next prime is 23256031. The reversal of 23256020 is 2065232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 23255983 and 23256001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64601 + ... + 64959.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^23256020 is an apocalyptic number.

23256020 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 23256020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25401600).

23256020 is an abundant number, since it is smaller than the sum of its proper divisors (27547180).

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

23256020 is a wasteful number, since it uses less digits than its factorization.

23256020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23256020 is about 4822.4495850138. The cubic root of 23256020 is about 285.4380050705.

The spelling of 23256020 in words is "twenty-three million, two hundred fifty-six thousand, twenty".