28675507 has 8 divisors (see below), whose sum is σ = 33023232. Its totient is φ = 24390600.

The previous prime is 28675487. The next prime is 28675553. The reversal of 28675507 is 70557682.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28675507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28675507.

It is not an unprimeable number, because it can be changed into a prime (28670507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14719 + ... + 16552.

It is an arithmetic number, because the mean of its divisors is an integer number (4127904).

Almost surely, 2^28675507 is an apocalyptic number.

28675507 is a deficient number, since it is larger than the sum of its proper divisors (4347725).

28675507 is a wasteful number, since it uses less digits than its factorization.

28675507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31409.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 28675507 is about 5354.9516337685. The cubic root of 28675507 is about 306.0814676218.

The spelling of 28675507 in words is "twenty-eight million, six hundred seventy-five thousand, five hundred seven".