23802020 has 24 divisors (see below), whose sum is σ = 54528768. Its totient is φ = 8655200.

The previous prime is 23802019. The next prime is 23802029. The reversal of 23802020 is 2020832.

It is a self number, because there is not a number n which added to its sum of digits gives 23802020.

It is not an unprimeable number, because it can be changed into a prime (23802029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53876 + ... + 54315.

It is an arithmetic number, because the mean of its divisors is an integer number (2272032).

Almost surely, 2^23802020 is an apocalyptic number.

23802020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23802020 is an abundant number, since it is smaller than the sum of its proper divisors (30726748).

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

23802020 is a wasteful number, since it uses less digits than its factorization.

23802020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108211 (or 108209 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 23802020 is about 4878.7313924831. The cubic root of 23802020 is about 287.6545659106.

Adding to 23802020 its reverse (2020832), we get a palindrome (25822852).

The spelling of 23802020 in words is "twenty-three million, eight hundred two thousand, twenty".