28316475 has 72 divisors (see below), whose sum is σ = 58670352. Its totient is φ = 12902400.

The previous prime is 28316471. The next prime is 28316501. The reversal of 28316475 is 57461382.

28316475 is a `hidden beast` number, since 2 + 8 + 3 + 1 + 647 + 5 = 666.

It is not a de Polignac number, because 28316475 - 2² = 28316471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28316471) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 41739 + ... + 42411.

It is an arithmetic number, because the mean of its divisors is an integer number (814866).

Almost surely, 2^28316475 is an apocalyptic number.

28316475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28316475 is an abundant number, since it is smaller than the sum of its proper divisors (30353877).

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

28316475 is a wasteful number, since it uses less digits than its factorization.

28316475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 709 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 28316475 is about 5321.3226739223. The cubic root of 28316475 is about 304.7986667332.

The spelling of 28316475 in words is "twenty-eight million, three hundred sixteen thousand, four hundred seventy-five".