15391316 has 6 divisors (see below), whose sum is σ = 26934810. Its totient is φ = 7695656.

The previous prime is 15391267. The next prime is 15391351. The reversal of 15391316 is 61319351.

It can be written as a sum of positive squares in only one way, i.e., 12988816 + 2402500 = 3604^2 + 1550^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 1923911 + ... + 1923918.

It is an arithmetic number, because the mean of its divisors is an integer number (4489135).

Almost surely, 2^15391316 is an apocalyptic number.

It is an amenable number.

15391316 is a deficient number, since it is larger than the sum of its proper divisors (11543494).

15391316 is a wasteful number, since it uses less digits than its factorization.

15391316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847833 (or 3847831 counting only the distinct ones).

The product of its digits is 2430, while the sum is 29.

The square root of 15391316 is about 3923.1767739932. The cubic root of 15391316 is about 248.7474199879.

The spelling of 15391316 in words is "fifteen million, three hundred ninety-one thousand, three hundred sixteen".