23102020 has 12 divisors (see below), whose sum is σ = 48514284. Its totient is φ = 9240800.

The previous prime is 23101999. The next prime is 23102021. The reversal of 23102020 is 2020132.

It can be written as a sum of positive squares in 2 ways, for example, as 16630084 + 6471936 = 4078^2 + 2544^2 .

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 = 23101988 and 23102006.

It is not an unprimeable number, because it can be changed into a prime (23102021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577531 + ... + 577570.

It is an arithmetic number, because the mean of its divisors is an integer number (4042857).

Almost surely, 2^23102020 is an apocalyptic number.

23102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23102020 is an abundant number, since it is smaller than the sum of its proper divisors (25412264).

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

23102020 is a wasteful number, since it uses less digits than its factorization.

23102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155110 (or 1155108 counting only the distinct ones).

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

The square root of 23102020 is about 4806.4560749059. The cubic root of 23102020 is about 284.8065579698.

Adding to 23102020 its reverse (2020132), we get a palindrome (25122152).

The spelling of 23102020 in words is "twenty-three million, one hundred two thousand, twenty".