23200020420 has 48 divisors (see below), whose sum is σ = 67784411520. Its totient is φ = 5917686016.

The previous prime is 23200020419. The next prime is 23200020463. The reversal of 23200020420 is 2402000232.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23200020420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8404425 + ... + 8407184.

It is an arithmetic number, because the mean of its divisors is an integer number (1412175240).

Almost surely, 2^23200020420 is an apocalyptic number.

23200020420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23200020420 is an abundant number, since it is smaller than the sum of its proper divisors (44584391100).

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

23200020420 is a wasteful number, since it uses less digits than its factorization.

23200020420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16811644 (or 16811642 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 23200020420 its reverse (2402000232), we get a palindrome (25602020652).

The spelling of 23200020420 in words is "twenty-three billion, two hundred million, twenty thousand, four hundred twenty".