23030020 has 48 divisors (see below), whose sum is σ = 52658928. Its totient is φ = 8409600.

The previous prime is 23030011. The next prime is 23030023. The reversal of 23030020 is 2003032.

It can be written as a sum of positive squares in 8 ways, for example, as 1052676 + 21977344 = 1026^2 + 4688^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 23029979 and 23030006.

It is not an unprimeable number, because it can be changed into a prime (23030023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25822 + ... + 26698.

It is an arithmetic number, because the mean of its divisors is an integer number (1097061).

Almost surely, 2^23030020 is an apocalyptic number.

23030020 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 23030020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26329464).

23030020 is an abundant number, since it is smaller than the sum of its proper divisors (29628908).

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

23030020 is a wasteful number, since it uses less digits than its factorization.

23030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 998 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

The square root of 23030020 is about 4798.9603040659. The cubic root of 23030020 is about 284.5103730145.

Adding to 23030020 its reverse (2003032), we get a palindrome (25033052).

The spelling of 23030020 in words is "twenty-three million, thirty thousand, twenty".