28487315 has 4 divisors (see below), whose sum is σ = 34184784. Its totient is φ = 22789848.

The previous prime is 28487297. The next prime is 28487351. The reversal of 28487315 is 51378482.

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 28487315 - 2⁸ = 28487059 is a prime.

It is a Duffinian 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, 2848727 + ... + 2848736.

It is an arithmetic number, because the mean of its divisors is an integer number (8546196).

Almost surely, 2^28487315 is an apocalyptic number.

28487315 is a deficient number, since it is larger than the sum of its proper divisors (5697469).

28487315 is an equidigital number, since it uses as much as digits as its factorization.

28487315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5697468.

The product of its digits is 53760, while the sum is 38.

The square root of 28487315 is about 5337.3509346866. The cubic root of 28487315 is about 305.4104122902.

The spelling of 28487315 in words is "twenty-eight million, four hundred eighty-seven thousand, three hundred fifteen".