23056020 has 144 divisors (see below), whose sum is σ = 77051520. Its totient is φ = 5545728.

The previous prime is 23056003. The next prime is 23056021. The reversal of 23056020 is 2065032.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23055984 and 23056002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23056021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137977 + ... + 138143.

It is an arithmetic number, because the mean of its divisors is an integer number (535080).

Almost surely, 2^23056020 is an apocalyptic number.

23056020 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 23056020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38525760).

23056020 is an abundant number, since it is smaller than the sum of its proper divisors (53995500).

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

23056020 is a wasteful number, since it uses less digits than its factorization.

23056020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 23056020 is about 4801.6684600251. The cubic root of 23056020 is about 284.6173998097.

The spelling of 23056020 in words is "twenty-three million, fifty-six thousand, twenty".