28560477 has 48 divisors (see below), whose sum is σ = 45581760. Its totient is φ = 15840000.

The previous prime is 28560463. The next prime is 28560479. The reversal of 28560477 is 77406582.

It is a de Polignac number, because none of the positive numbers 2^k-28560477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28560479) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 282727 + ... + 282827.

It is an arithmetic number, because the mean of its divisors is an integer number (949620).

Almost surely, 2^28560477 is an apocalyptic number.

It is an amenable number.

28560477 is a deficient number, since it is larger than the sum of its proper divisors (17021283).

28560477 is a wasteful number, since it uses less digits than its factorization.

28560477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 28560477 is about 5344.2003143595. The cubic root of 28560477 is about 305.6716435934.

The spelling of 28560477 in words is "twenty-eight million, five hundred sixty thousand, four hundred seventy-seven".