28315071 has 12 divisors (see below), whose sum is σ = 41510872. Its totient is φ = 18594576.

The previous prime is 28315069. The next prime is 28315087. The reversal of 28315071 is 17051382.

It is not a de Polignac number, because 28315071 - 2¹ = 28315069 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 (28315171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22876 + ... + 24081.

Almost surely, 2^28315071 is an apocalyptic number.

28315071 is a deficient number, since it is larger than the sum of its proper divisors (13195801).

28315071 is a wasteful number, since it uses less digits than its factorization.

28315071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47030 (or 47027 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 28315071 is about 5321.1907501987. The cubic root of 28315071 is about 304.7936290958.

The spelling of 28315071 in words is "twenty-eight million, three hundred fifteen thousand, seventy-one".