28272966 has 16 divisors (see below), whose sum is σ = 56844288. Its totient is φ = 9374600.

The previous prime is 28272949. The next prime is 28272967. The reversal of 28272966 is 66927282.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28272967) 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, 11190 + ... + 13481.

It is an arithmetic number, because the mean of its divisors is an integer number (3552768).

Almost surely, 2^28272966 is an apocalyptic number.

28272966 is an abundant number, since it is smaller than the sum of its proper divisors (28571322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28272966 is a wasteful number, since it uses less digits than its factorization.

28272966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24867.

The product of its digits is 145152, while the sum is 42.

The square root of 28272966 is about 5317.2329270025. The cubic root of 28272966 is about 304.6424763505.

The spelling of 28272966 in words is "twenty-eight million, two hundred seventy-two thousand, nine hundred sixty-six".