28500479 has 4 divisors (see below), whose sum is σ = 32571984. Its totient is φ = 24428976.

The previous prime is 28500469. The next prime is 28500499. The reversal of 28500479 is 97400582.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28500479 - 2⁴ = 28500463 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 (28500469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2035742 + ... + 2035755.

It is an arithmetic number, because the mean of its divisors is an integer number (8142996).

Almost surely, 2^28500479 is an apocalyptic number.

28500479 is a deficient number, since it is larger than the sum of its proper divisors (4071505).

28500479 is an equidigital number, since it uses as much as digits as its factorization.

28500479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071504.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 28500479 is about 5338.5839882875. The cubic root of 28500479 is about 305.4574484715.

The spelling of 28500479 in words is "twenty-eight million, five hundred thousand, four hundred seventy-nine".