13420023320 has 64 divisors (see below), whose sum is σ = 33242378400. Its totient is φ = 4835220480.

The previous prime is 13420023319. The next prime is 13420023341. The reversal of 13420023320 is 2332002431.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13420023292 and 13420023301.

It is a congruent number.

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, 91949 + ... + 187868.

Almost surely, 2^13420023320 is an apocalyptic number.

13420023320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13420023320 is an abundant number, since it is smaller than the sum of its proper divisors (19822355080).

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

13420023320 is a wasteful number, since it uses less digits than its factorization.

13420023320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279948 (or 279944 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 13420023320 its reverse (2332002431), we get a palindrome (15752025751).

The spelling of 13420023320 in words is "thirteen billion, four hundred twenty million, twenty-three thousand, three hundred twenty".