15715983 has 8 divisors (see below), whose sum is σ = 22057600. Its totient is φ = 9925848.

The previous prime is 15715981. The next prime is 15716003. The reversal of 15715983 is 38951751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 15715983 - 2¹ = 15715981 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 (15715981) 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 7 ways as a sum of consecutive naturals, for example, 137803 + ... + 137916.

It is an arithmetic number, because the mean of its divisors is an integer number (2757200).

Almost surely, 2^15715983 is an apocalyptic number.

15715983 is a deficient number, since it is larger than the sum of its proper divisors (6341617).

15715983 is a wasteful number, since it uses less digits than its factorization.

15715983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275741.

The product of its digits is 37800, while the sum is 39.

The square root of 15715983 is about 3964.3389108400. The cubic root of 15715983 is about 250.4843038599.

The spelling of 15715983 in words is "fifteen million, seven hundred fifteen thousand, nine hundred eighty-three".