13199780 has 24 divisors (see below), whose sum is σ = 30240000. Its totient is φ = 4799840.

The previous prime is 13199779. The next prime is 13199801. The reversal of 13199780 is 8799131.

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, 29780 + ... + 30219.

It is an arithmetic number, because the mean of its divisors is an integer number (1260000).

Almost surely, 2^13199780 is an apocalyptic number.

13199780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13199780 is an abundant number, since it is smaller than the sum of its proper divisors (17040220).

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

13199780 is a wasteful number, since it uses less digits than its factorization.

13199780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60019 (or 60017 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 13199780 is about 3633.1501482873. The cubic root of 13199780 is about 236.3318371243.

The spelling of 13199780 in words is "thirteen million, one hundred ninety-nine thousand, seven hundred eighty".