28088347 has 4 divisors (see below), whose sum is σ = 32100976. Its totient is φ = 24075720.

The previous prime is 28088341. The next prime is 28088353. The reversal of 28088347 is 74388082.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74388082 = 2 ⋅37194041.

It is an interprime number because it is at equal distance from previous prime (28088341) and next prime (28088353).

It is a cyclic number.

It is not a de Polignac number, because 28088347 - 2³ = 28088339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28088341) 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, 2006304 + ... + 2006317.

It is an arithmetic number, because the mean of its divisors is an integer number (8025244).

Almost surely, 2^28088347 is an apocalyptic number.

28088347 is a deficient number, since it is larger than the sum of its proper divisors (4012629).

28088347 is an equidigital number, since it uses as much as digits as its factorization.

28088347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4012628.

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 28088347 is about 5299.8440543095. The cubic root of 28088347 is about 303.9779351194.

The spelling of 28088347 in words is "twenty-eight million, eighty-eight thousand, three hundred forty-seven".