13307720 has 32 divisors (see below), whose sum is σ = 30049920. Its totient is φ = 5304000.

The previous prime is 13307689. The next prime is 13307737. The reversal of 13307720 is 2770331.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17345 + ... + 18095.

It is an arithmetic number, because the mean of its divisors is an integer number (939060).

Almost surely, 2^13307720 is an apocalyptic number.

13307720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13307720 is an abundant number, since it is smaller than the sum of its proper divisors (16742200).

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

13307720 is a wasteful number, since it uses less digits than its factorization.

13307720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205 (or 1201 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 23.

The square root of 13307720 is about 3647.9747806146. The cubic root of 13307720 is about 236.9742831443.

The spelling of 13307720 in words is "thirteen million, three hundred seven thousand, seven hundred twenty".