13519972 has 12 divisors (see below), whose sum is σ = 23701356. Its totient is φ = 6748160.

The previous prime is 13519969. The next prime is 13519993. The reversal of 13519972 is 27991531.

It can be written as a sum of positive squares in 2 ways, for example, as 9771876 + 3748096 = 3126^2 + 1936^2 .

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 3 ways as a sum of consecutive naturals, for example, 73 + ... + 5200.

It is an arithmetic number, because the mean of its divisors is an integer number (1975113).

Almost surely, 2^13519972 is an apocalyptic number.

It is an amenable number.

13519972 is a deficient number, since it is larger than the sum of its proper divisors (10181384).

13519972 is a wasteful number, since it uses less digits than its factorization.

13519972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5918 (or 5916 counting only the distinct ones).

The product of its digits is 17010, while the sum is 37.

The square root of 13519972 is about 3676.9514546700. The cubic root of 13519972 is about 238.2275205822.

The spelling of 13519972 in words is "thirteen million, five hundred nineteen thousand, nine hundred seventy-two".