28587151 has 4 divisors (see below), whose sum is σ = 28598472. Its totient is φ = 28575832.

The previous prime is 28587133. The next prime is 28587173. The reversal of 28587151 is 15178582.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 28587151 - 2⁷ = 28587023 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 28587151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28587121) 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 in 3 ways as a sum of consecutive naturals, for example, 45 + ... + 7561.

It is an arithmetic number, because the mean of its divisors is an integer number (7149618).

Almost surely, 2^28587151 is an apocalyptic number.

28587151 is a deficient number, since it is larger than the sum of its proper divisors (11321).

28587151 is an equidigital number, since it uses as much as digits as its factorization.

28587151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11320.

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

The square root of 28587151 is about 5346.6953345034. The cubic root of 28587151 is about 305.7667744559.

The spelling of 28587151 in words is "twenty-eight million, five hundred eighty-seven thousand, one hundred fifty-one".