28474867 has 4 divisors (see below), whose sum is σ = 29244496. Its totient is φ = 27705240.

The previous prime is 28474843. The next prime is 28474871. The reversal of 28474867 is 76847482.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28474867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28474807) 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, 384759 + ... + 384832.

It is an arithmetic number, because the mean of its divisors is an integer number (7311124).

Almost surely, 2^28474867 is an apocalyptic number.

28474867 is a deficient number, since it is larger than the sum of its proper divisors (769629).

28474867 is an equidigital number, since it uses as much as digits as its factorization.

28474867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769628.

The product of its digits is 602112, while the sum is 46.

The square root of 28474867 is about 5336.1846857094. The cubic root of 28474867 is about 305.3659211112.

The spelling of 28474867 in words is "twenty-eight million, four hundred seventy-four thousand, eight hundred sixty-seven".