28739675 has 6 divisors (see below), whose sum is σ = 35637228. Its totient is φ = 22991720.

The previous prime is 28739617. The next prime is 28739681. The reversal of 28739675 is 57693782.

It is not a de Polignac number, because 28739675 - 2⁶ = 28739611 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 574769 + ... + 574818.

It is an arithmetic number, because the mean of its divisors is an integer number (5939538).

Almost surely, 2^28739675 is an apocalyptic number.

28739675 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28739675 is a deficient number, since it is larger than the sum of its proper divisors (6897553).

28739675 is a wasteful number, since it uses less digits than its factorization.

28739675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1149597 (or 1149592 counting only the distinct ones).

The product of its digits is 635040, while the sum is 47.

The square root of 28739675 is about 5360.9397497081. The cubic root of 28739675 is about 306.3096066124.

The spelling of 28739675 in words is "twenty-eight million, seven hundred thirty-nine thousand, six hundred seventy-five".