28315767 has 8 divisors (see below), whose sum is σ = 38774896. Its totient is φ = 18366912.

The previous prime is 28315759. The next prime is 28315769. The reversal of 28315767 is 76751382.

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

It is not a de Polignac number, because 28315767 - 2³ = 28315759 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 (28315769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127438 + ... + 127659.

It is an arithmetic number, because the mean of its divisors is an integer number (4846862).

Almost surely, 2^28315767 is an apocalyptic number.

28315767 is a deficient number, since it is larger than the sum of its proper divisors (10459129).

28315767 is a wasteful number, since it uses less digits than its factorization.

28315767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255137.

The product of its digits is 70560, while the sum is 39.

The square root of 28315767 is about 5321.2561486927. The cubic root of 28315767 is about 304.7961264069.

The spelling of 28315767 in words is "twenty-eight million, three hundred fifteen thousand, seven hundred sixty-seven".