23200420 has 24 divisors (see below), whose sum is σ = 48875904. Its totient is φ = 9250656.

The previous prime is 23200417. The next prime is 23200421. The reversal of 23200420 is 2400232.

It is a self number, because there is not a number n which added to its sum of digits gives 23200420.

It is not an unprimeable number, because it can be changed into a prime (23200421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5269 + ... + 8611.

It is an arithmetic number, because the mean of its divisors is an integer number (2036496).

Almost surely, 2^23200420 is an apocalyptic number.

23200420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23200420 is an abundant number, since it is smaller than the sum of its proper divisors (25675484).

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

23200420 is a wasteful number, since it uses less digits than its factorization.

23200420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3699 (or 3697 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 23200420 is about 4816.6814301965. The cubic root of 23200420 is about 285.2103505047.

Adding to 23200420 its reverse (2400232), we get a palindrome (25600652).

The spelling of 23200420 in words is "twenty-three million, two hundred thousand, four hundred twenty".