28887295 has 4 divisors (see below), whose sum is σ = 34664760. Its totient is φ = 23109832.

The previous prime is 28887283. The next prime is 28887307. The reversal of 28887295 is 59278882.

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

It is an interprime number because it is at equal distance from previous prime (28887283) and next prime (28887307).

It is a cyclic number.

It is not a de Polignac number, because 28887295 - 2¹⁷ = 28756223 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2888725 + ... + 2888734.

It is an arithmetic number, because the mean of its divisors is an integer number (8666190).

Almost surely, 2^28887295 is an apocalyptic number.

28887295 is a deficient number, since it is larger than the sum of its proper divisors (5777465).

28887295 is an equidigital number, since it uses as much as digits as its factorization.

28887295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777464.

The product of its digits is 645120, while the sum is 49.

The square root of 28887295 is about 5374.6902236315. The cubic root of 28887295 is about 306.8331595665.

The spelling of 28887295 in words is "twenty-eight million, eight hundred eighty-seven thousand, two hundred ninety-five".