28678495 has 4 divisors (see below), whose sum is σ = 34414200. Its totient is φ = 22942792.

The previous prime is 28678483. The next prime is 28678511. The reversal of 28678495 is 59487682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59487682 = 2 ⋅29743841.

It is a cyclic number.

It is not a de Polignac number, because 28678495 - 2¹³ = 28670303 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent 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, 2867845 + ... + 2867854.

It is an arithmetic number, because the mean of its divisors is an integer number (8603550).

Almost surely, 2^28678495 is an apocalyptic number.

28678495 is a deficient number, since it is larger than the sum of its proper divisors (5735705).

28678495 is an equidigital number, since it uses as much as digits as its factorization.

28678495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735704.

The product of its digits is 967680, while the sum is 49.

The square root of 28678495 is about 5355.2306206176. The cubic root of 28678495 is about 306.0920985256.

The spelling of 28678495 in words is "twenty-eight million, six hundred seventy-eight thousand, four hundred ninety-five".