23000020 has 24 divisors (see below), whose sum is σ = 48732264. Its totient is φ = 9117696.

The previous prime is 23000011. The next prime is 23000027. The reversal of 23000020 is 2000032.

It can be written as a sum of positive squares in 4 ways, for example, as 132496 + 22867524 = 364^2 + 4782^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22999967 and 23000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23000027) 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, 2829 + ... + 7348.

It is an arithmetic number, because the mean of its divisors is an integer number (2030511).

Almost surely, 2^23000020 is an apocalyptic number.

23000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23000020 is an abundant number, since it is smaller than the sum of its proper divisors (25732244).

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

23000020 is a wasteful number, since it uses less digits than its factorization.

23000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10299 (or 10297 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 7.

The square root of 23000020 is about 4795.8336084564. The cubic root of 23000020 is about 284.3867804161.

Adding to 23000020 its product of nonzero digits (12), we get a palindrome (23000032).

Adding to 23000020 its reverse (2000032), we get a palindrome (25000052).

The spelling of 23000020 in words is "twenty-three million, twenty", and thus it is an aban number and an uban number.