13553320 has 32 divisors (see below), whose sum is σ = 33268320. Its totient is φ = 4928320.

The previous prime is 13553311. The next prime is 13553341. The reversal of 13553320 is 2335531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 13553291 and 13553300.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14962 + ... + 15841.

It is an arithmetic number, because the mean of its divisors is an integer number (1039635).

Almost surely, 2^13553320 is an apocalyptic number.

13553320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13553320 is an abundant number, since it is smaller than the sum of its proper divisors (19715000).

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

13553320 is a wasteful number, since it uses less digits than its factorization.

13553320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30825 (or 30821 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 22.

The square root of 13553320 is about 3681.4833966759. The cubic root of 13553320 is about 238.4232282969.

Adding to 13553320 its reverse (2335531), we get a palindrome (15888851).

The spelling of 13553320 in words is "thirteen million, five hundred fifty-three thousand, three hundred twenty".