28874994 has 8 divisors (see below), whose sum is σ = 57750000. Its totient is φ = 9624996.

The previous prime is 28874987. The next prime is 28874999. The reversal of 28874994 is 49947882.

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

28874994 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (28874999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2406244 + ... + 2406255.

It is an arithmetic number, because the mean of its divisors is an integer number (7218750).

Almost surely, 2^28874994 is an apocalyptic number.

28874994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28874994 is a wasteful number, since it uses less digits than its factorization.

28874994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4812504.

The product of its digits is 1161216, while the sum is 51.

The square root of 28874994 is about 5373.5457567606. The cubic root of 28874994 is about 306.7896007336.

The spelling of 28874994 in words is "twenty-eight million, eight hundred seventy-four thousand, nine hundred ninety-four".