28607895 has 12 divisors (see below), whose sum is σ = 49587096. Its totient is φ = 15257520.

The previous prime is 28607867. The next prime is 28607903. The reversal of 28607895 is 59870682.

It is not a de Polignac number, because 28607895 - 2¹⁶ = 28542359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 635731 = 28607895 / (2 + 8 + 6 + 0 + 7 + 8 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 28607895.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 317821 + ... + 317910.

It is an arithmetic number, because the mean of its divisors is an integer number (4132258).

Almost surely, 2^28607895 is an apocalyptic number.

28607895 is a deficient number, since it is larger than the sum of its proper divisors (20979201).

28607895 is a wasteful number, since it uses less digits than its factorization.

28607895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635742 (or 635739 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 28607895 is about 5348.6348725633. The cubic root of 28607895 is about 305.8407155117.

The spelling of 28607895 in words is "twenty-eight million, six hundred seven thousand, eight hundred ninety-five".