15238973 has 4 divisors (see below), whose sum is σ = 15249468. Its totient is φ = 15228480.

The previous prime is 15238967. The next prime is 15238997. The reversal of 15238973 is 37983251.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5139289 + 10099684 = 2267^2 + 3178^2 .

It is a cyclic number.

It is not a de Polignac number, because 15238973 - 2⁴ = 15238957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15238913) 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, 2636 + ... + 6117.

It is an arithmetic number, because the mean of its divisors is an integer number (3812367).

Almost surely, 2^15238973 is an apocalyptic number.

It is an amenable number.

15238973 is a deficient number, since it is larger than the sum of its proper divisors (10495).

15238973 is an equidigital number, since it uses as much as digits as its factorization.

15238973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10494.

The product of its digits is 45360, while the sum is 38.

The square root of 15238973 is about 3903.7127199629. The cubic root of 15238973 is about 247.9239979127.

The spelling of 15238973 in words is "fifteen million, two hundred thirty-eight thousand, nine hundred seventy-three".