28765607 has 8 divisors (see below), whose sum is σ = 31058160. Its totient is φ = 26484480.

The previous prime is 28765603. The next prime is 28765609. The reversal of 28765607 is 70656782.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28765607 - 2² = 28765603 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 (28765603) 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 7 ways as a sum of consecutive naturals, for example, 2807 + ... + 8087.

It is an arithmetic number, because the mean of its divisors is an integer number (3882270).

Almost surely, 2^28765607 is an apocalyptic number.

28765607 is a deficient number, since it is larger than the sum of its proper divisors (2292553).

28765607 is a wasteful number, since it uses less digits than its factorization.

28765607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5713.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 28765607 is about 5363.3578101782. The cubic root of 28765607 is about 306.4017073157.

The spelling of 28765607 in words is "twenty-eight million, seven hundred sixty-five thousand, six hundred seven".