28949271 has 8 divisors (see below), whose sum is σ = 41568240. Its totient is φ = 17814912.

The previous prime is 28949237. The next prime is 28949273. The reversal of 28949271 is 17294982.

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

It is not a de Polignac number, because 28949271 - 2⁷ = 28949143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28949273) 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, 371106 + ... + 371183.

It is an arithmetic number, because the mean of its divisors is an integer number (5196030).

Almost surely, 2^28949271 is an apocalyptic number.

28949271 is a deficient number, since it is larger than the sum of its proper divisors (12618969).

28949271 is a wasteful number, since it uses less digits than its factorization.

28949271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742305.

The product of its digits is 72576, while the sum is 42.

The square root of 28949271 is about 5380.4526761231. The cubic root of 28949271 is about 307.0524336872.

The spelling of 28949271 in words is "twenty-eight million, nine hundred forty-nine thousand, two hundred seventy-one".