13402032320 has 28 divisors (see below), whose sum is σ = 31913590224. Its totient is φ = 5360812800.

The previous prime is 13402032307. The next prime is 13402032407. The reversal of 13402032320 is 2323020431.

It is a super-2 number, since 2×13402032320² (a number of 21 digits) contains 22 as substring.

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 = 13402032292 and 13402032301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20940356 + ... + 20940995.

Almost surely, 2^13402032320 is an apocalyptic number.

13402032320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13402032320 is an abundant number, since it is smaller than the sum of its proper divisors (18511557904).

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

13402032320 is an equidigital number, since it uses as much as digits as its factorization.

13402032320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41881368 (or 41881358 counting only the distinct ones).

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

Adding to 13402032320 its reverse (2323020431), we get a palindrome (15725052751).

The spelling of 13402032320 in words is "thirteen billion, four hundred two million, thirty-two thousand, three hundred twenty".