28678371 has 16 divisors (see below), whose sum is σ = 40650624. Its totient is φ = 17921664.

The previous prime is 28678333. The next prime is 28678387. The reversal of 28678371 is 17387682.

It is not a de Polignac number, because 28678371 - 2¹³ = 28670179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28678301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13440 + ... + 15426.

It is an arithmetic number, because the mean of its divisors is an integer number (2540664).

Almost surely, 2^28678371 is an apocalyptic number.

28678371 is a deficient number, since it is larger than the sum of its proper divisors (11972253).

28678371 is a wasteful number, since it uses less digits than its factorization.

28678371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290.

The product of its digits is 112896, while the sum is 42.

The square root of 28678371 is about 5355.2190431391. The cubic root of 28678371 is about 306.0916573649.

The spelling of 28678371 in words is "twenty-eight million, six hundred seventy-eight thousand, three hundred seventy-one".