28928674 has 8 divisors (see below), whose sum is σ = 43416108. Its totient is φ = 14456640.

The previous prime is 28928651. The next prime is 28928677. The reversal of 28928674 is 47682982.

It can be written as a sum of positive squares in 2 ways, for example, as 28355625 + 573049 = 5325^2 + 757^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28928677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4294 + ... + 8734.

Almost surely, 2^28928674 is an apocalyptic number.

28928674 is a deficient number, since it is larger than the sum of its proper divisors (14487434).

28928674 is a wasteful number, since it uses less digits than its factorization.

28928674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7700.

The product of its digits is 387072, while the sum is 46.

The square root of 28928674 is about 5378.5382772646. The cubic root of 28928674 is about 306.9795952443.

The spelling of 28928674 in words is "twenty-eight million, nine hundred twenty-eight thousand, six hundred seventy-four".