15980423 has 8 divisors (see below), whose sum is σ = 17031168. Its totient is φ = 14959384.

The previous prime is 15980389. The next prime is 15980429. The reversal of 15980423 is 32408951.

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

It is a de Polignac number, because none of the positive numbers 2^k-15980423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15980423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15980429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6311 + ... + 8472.

It is an arithmetic number, because the mean of its divisors is an integer number (2128896).

Almost surely, 2^15980423 is an apocalyptic number.

15980423 is a deficient number, since it is larger than the sum of its proper divisors (1050745).

15980423 is a wasteful number, since it uses less digits than its factorization.

15980423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14853.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 15980423 is about 3997.5521259891. The cubic root of 15980423 is about 251.8813952242.

The spelling of 15980423 in words is "fifteen million, nine hundred eighty thousand, four hundred twenty-three".