28875086 has 4 divisors (see below), whose sum is σ = 43312632. Its totient is φ = 14437542.

The previous prime is 28875083. The next prime is 28875103. The reversal of 28875086 is 68057882.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28875083) by changing a digit.

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 as a sum of consecutive naturals, namely, 7218770 + ... + 7218773.

It is an arithmetic number, because the mean of its divisors is an integer number (10828158).

Almost surely, 2^28875086 is an apocalyptic number.

28875086 is a deficient number, since it is larger than the sum of its proper divisors (14437546).

28875086 is a wasteful number, since it uses less digits than its factorization.

28875086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14437545.

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 28875086 is about 5373.5543172094. The cubic root of 28875086 is about 306.7899265589.

The spelling of 28875086 in words is "twenty-eight million, eight hundred seventy-five thousand, eighty-six".