28875151 has 4 divisors (see below), whose sum is σ = 29095704. Its totient is φ = 28654600.

The previous prime is 28875113. The next prime is 28875169. The reversal of 28875151 is 15157882.

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 28875151 - 2⁷ = 28875023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28875151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28875751) 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, 110080 + ... + 110341.

It is an arithmetic number, because the mean of its divisors is an integer number (7273926).

Almost surely, 2^28875151 is an apocalyptic number.

28875151 is a deficient number, since it is larger than the sum of its proper divisors (220553).

28875151 is a wasteful number, since it uses less digits than its factorization.

28875151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220552.

The product of its digits is 22400, while the sum is 37.

The square root of 28875151 is about 5373.5603653444. The cubic root of 28875151 is about 306.7901567612.

The spelling of 28875151 in words is "twenty-eight million, eight hundred seventy-five thousand, one hundred fifty-one".