28951271 has 8 divisors (see below), whose sum is σ = 29623104. Its totient is φ = 28285920.

The previous prime is 28951267. The next prime is 28951277. The reversal of 28951271 is 17215982.

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

It is a cyclic number.

It is not a de Polignac number, because 28951271 - 2² = 28951267 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 (28951277) 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, 8066 + ... + 11088.

It is an arithmetic number, because the mean of its divisors is an integer number (3702888).

Almost surely, 2^28951271 is an apocalyptic number.

28951271 is a deficient number, since it is larger than the sum of its proper divisors (671833).

28951271 is a wasteful number, since it uses less digits than its factorization.

28951271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241.

The product of its digits is 10080, while the sum is 35.

The square root of 28951271 is about 5380.6385308809. The cubic root of 28951271 is about 307.0595045702.

The spelling of 28951271 in words is "twenty-eight million, nine hundred fifty-one thousand, two hundred seventy-one".