23012020 has 24 divisors (see below), whose sum is σ = 48429864. Its totient is φ = 9184896.

The previous prime is 23011997. The next prime is 23012047. The reversal of 23012020 is 2021032.

It can be written as a sum of positive squares in 4 ways, for example, as 10404 + 23001616 = 102^2 + 4796^2 .

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 = 23011988 and 23012006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11322 + ... + 13198.

It is an arithmetic number, because the mean of its divisors is an integer number (2017911).

Almost surely, 2^23012020 is an apocalyptic number.

23012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23012020 is an abundant number, since it is smaller than the sum of its proper divisors (25417844).

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

23012020 is a wasteful number, since it uses less digits than its factorization.

23012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2499 (or 2497 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 23012020 is about 4797.0845312544. The cubic root of 23012020 is about 284.4362303446.

Adding to 23012020 its reverse (2021032), we get a palindrome (25033052).

The spelling of 23012020 in words is "twenty-three million, twelve thousand, twenty".