16013320 has 32 divisors (see below), whose sum is σ = 38151000. Its totient is φ = 6028288.

The previous prime is 16013287. The next prime is 16013321. The reversal of 16013320 is 2331061.

It can be written as a sum of positive squares in 4 ways, for example, as 9449476 + 6563844 = 3074^2 + 2562^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16013294 and 16013303.

It is not an unprimeable number, because it can be changed into a prime (16013321) 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, 11095 + ... + 12454.

Almost surely, 2^16013320 is an apocalyptic number.

16013320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16013320 is an abundant number, since it is smaller than the sum of its proper divisors (22137680).

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

16013320 is a wasteful number, since it uses less digits than its factorization.

16013320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23577 (or 23573 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 16013320 is about 4001.6646536160. The cubic root of 16013320 is about 252.0541162019.

Adding to 16013320 its reverse (2331061), we get a palindrome (18344381).

The spelling of 16013320 in words is "sixteen million, thirteen thousand, three hundred twenty".