23340420 has 48 divisors (see below), whose sum is σ = 72616320. Its totient is φ = 6223968.

The previous prime is 23340419. The next prime is 23340437. The reversal of 23340420 is 2404332.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23340393 and 23340402.

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, 21072 + ... + 22151.

It is an arithmetic number, because the mean of its divisors is an integer number (1512840).

Almost surely, 2^23340420 is an apocalyptic number.

23340420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23340420 is an abundant number, since it is smaller than the sum of its proper divisors (49275900).

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

23340420 is a wasteful number, since it uses less digits than its factorization.

23340420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43241 (or 43233 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 23340420 is about 4831.1923993979. The cubic root of 23340420 is about 285.7828890024.

Adding to 23340420 its reverse (2404332), we get a palindrome (25744752).

The spelling of 23340420 in words is "twenty-three million, three hundred forty thousand, four hundred twenty".