28875607 has 4 divisors (see below), whose sum is σ = 28890216. Its totient is φ = 28861000.

The previous prime is 28875599. The next prime is 28875641. The reversal of 28875607 is 70657882.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28875607 - 2³ = 28875599 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 (28875647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3769 + ... + 8482.

It is an arithmetic number, because the mean of its divisors is an integer number (7222554).

Almost surely, 2^28875607 is an apocalyptic number.

28875607 is a deficient number, since it is larger than the sum of its proper divisors (14609).

28875607 is a wasteful number, since it uses less digits than its factorization.

28875607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14608.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 28875607 is about 5373.6027951459. The cubic root of 28875607 is about 306.7917717089.

The spelling of 28875607 in words is "twenty-eight million, eight hundred seventy-five thousand, six hundred seven".