28276479 has 96 divisors (see below), whose sum is σ = 55814400. Its totient is φ = 13970880.

The previous prime is 28276471. The next prime is 28276513. The reversal of 28276479 is 97467282.

It is not a de Polignac number, because 28276479 - 2³ = 28276471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28276471) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 422004 + ... + 422070.

It is an arithmetic number, because the mean of its divisors is an integer number (581400).

Almost surely, 2^28276479 is an apocalyptic number.

28276479 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

28276479 is a deficient number, since it is larger than the sum of its proper divisors (27537921).

28276479 is a wasteful number, since it uses less digits than its factorization.

28276479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 117 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 28276479 is about 5317.5632577338. The cubic root of 28276479 is about 304.6550934054.

The spelling of 28276479 in words is "twenty-eight million, two hundred seventy-six thousand, four hundred seventy-nine".