15972343 has 4 divisors (see below), whose sum is σ = 15992440. Its totient is φ = 15952248.

The previous prime is 15972317. The next prime is 15972361. The reversal of 15972343 is 34327951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15972343 - 2¹⁷ = 15841271 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15972299 and 15972308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15972743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8805 + ... + 10462.

It is an arithmetic number, because the mean of its divisors is an integer number (3998110).

Almost surely, 2^15972343 is an apocalyptic number.

15972343 is a deficient number, since it is larger than the sum of its proper divisors (20097).

15972343 is an equidigital number, since it uses as much as digits as its factorization.

15972343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20096.

The product of its digits is 22680, while the sum is 34.

The square root of 15972343 is about 3996.5413797432. The cubic root of 15972343 is about 251.8389360898.

The spelling of 15972343 in words is "fifteen million, nine hundred seventy-two thousand, three hundred forty-three".