28274587 has 8 divisors (see below), whose sum is σ = 32659632. Its totient is φ = 24192000.

The previous prime is 28274581. The next prime is 28274591. The reversal of 28274587 is 78547282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28274587 - 2⁷ = 28274459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28274581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75414 + ... + 75787.

It is an arithmetic number, because the mean of its divisors is an integer number (4082454).

Almost surely, 2^28274587 is an apocalyptic number.

28274587 is a deficient number, since it is larger than the sum of its proper divisors (4385045).

28274587 is a wasteful number, since it uses less digits than its factorization.

28274587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151229.

The product of its digits is 250880, while the sum is 43.

The square root of 28274587 is about 5317.3853537241. The cubic root of 28274587 is about 304.6482983551.

The spelling of 28274587 in words is "twenty-eight million, two hundred seventy-four thousand, five hundred eighty-seven".