28271966 has 8 divisors (see below), whose sum is σ = 42447240. Its totient is φ = 14122888.

The previous prime is 28271963. The next prime is 28271989. The reversal of 28271966 is 66917282.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28271963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3581 + ... + 8328.

It is an arithmetic number, because the mean of its divisors is an integer number (5305905).

Almost surely, 2^28271966 is an apocalyptic number.

28271966 is a deficient number, since it is larger than the sum of its proper divisors (14175274).

28271966 is a wasteful number, since it uses less digits than its factorization.

28271966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13098.

The product of its digits is 72576, while the sum is 41.

The square root of 28271966 is about 5317.1388922991. The cubic root of 28271966 is about 304.6388846265.

The spelling of 28271966 in words is "twenty-eight million, two hundred seventy-one thousand, nine hundred sixty-six".