15072973 has 4 divisors (see below), whose sum is σ = 15084160. Its totient is φ = 15061788.

The previous prime is 15072943. The next prime is 15072979. The reversal of 15072973 is 37927051.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 15072973 - 2²¹ = 12975821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15072979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3243 + ... + 6376.

It is an arithmetic number, because the mean of its divisors is an integer number (3771040).

Almost surely, 2^15072973 is an apocalyptic number.

It is an amenable number.

15072973 is a deficient number, since it is larger than the sum of its proper divisors (11187).

15072973 is an equidigital number, since it uses as much as digits as its factorization.

15072973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11186.

The product of its (nonzero) digits is 13230, while the sum is 34.

The square root of 15072973 is about 3882.3926900817. The cubic root of 15072973 is about 247.0204870810.

The spelling of 15072973 in words is "fifteen million, seventy-two thousand, nine hundred seventy-three".