15320873 has 4 divisors (see below), whose sum is σ = 15332688. Its totient is φ = 15309060.

The previous prime is 15320867. The next prime is 15320881. The reversal of 15320873 is 37802351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37802351 = 107 ⋅353293.

It is a cyclic number.

It is not a de Polignac number, because 15320873 - 2¹⁰ = 15319849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15320803) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3683 + ... + 6648.

It is an arithmetic number, because the mean of its divisors is an integer number (3833172).

Almost surely, 2^15320873 is an apocalyptic number.

It is an amenable number.

15320873 is a deficient number, since it is larger than the sum of its proper divisors (11815).

15320873 is a wasteful number, since it uses less digits than its factorization.

15320873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11814.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 15320873 is about 3914.1886771079. The cubic root of 15320873 is about 248.3673503641.

The spelling of 15320873 in words is "fifteen million, three hundred twenty thousand, eight hundred seventy-three".