28755895 has 12 divisors (see below), whose sum is σ = 40141224. Its totient is φ = 19718160.

The previous prime is 28755871. The next prime is 28755967. The reversal of 28755895 is 59855782.

It is not a de Polignac number, because 28755895 - 2¹⁵ = 28723127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 58441 + ... + 58930.

It is an arithmetic number, because the mean of its divisors is an integer number (3345102).

Almost surely, 2^28755895 is an apocalyptic number.

28755895 is a deficient number, since it is larger than the sum of its proper divisors (11385329).

28755895 is a wasteful number, since it uses less digits than its factorization.

28755895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117390 (or 117383 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 49.

The square root of 28755895 is about 5362.4523307905. The cubic root of 28755895 is about 306.3672204330.

The spelling of 28755895 in words is "twenty-eight million, seven hundred fifty-five thousand, eight hundred ninety-five".