28795477 has 4 divisors (see below), whose sum is σ = 29267596. Its totient is φ = 28323360.

The previous prime is 28795457. The next prime is 28795493. The reversal of 28795477 is 77459782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77459782 = 2 ⋅38729891.

It can be written as a sum of positive squares in 2 ways, for example, as 1012036 + 27783441 = 1006^2 + 5271^2 .

It is a cyclic number.

It is not a de Polignac number, because 28795477 - 2¹⁵ = 28762709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28795477.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28795427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235968 + ... + 236089.

It is an arithmetic number, because the mean of its divisors is an integer number (7316899).

Almost surely, 2^28795477 is an apocalyptic number.

It is an amenable number.

28795477 is a deficient number, since it is larger than the sum of its proper divisors (472119).

28795477 is an equidigital number, since it uses as much as digits as its factorization.

28795477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472118.

The product of its digits is 987840, while the sum is 49.

The square root of 28795477 is about 5366.1417238086. The cubic root of 28795477 is about 306.5077257397.

The spelling of 28795477 in words is "twenty-eight million, seven hundred ninety-five thousand, four hundred seventy-seven".