28914918 has 8 divisors (see below), whose sum is σ = 57829848. Its totient is φ = 9638304.

The previous prime is 28914901. The next prime is 28914929. The reversal of 28914918 is 81941982.

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

28914918 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28914918.

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, 2409571 + ... + 2409582.

It is an arithmetic number, because the mean of its divisors is an integer number (7228731).

Almost surely, 2^28914918 is an apocalyptic number.

28914918 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.

28914918 is a wasteful number, since it uses less digits than its factorization.

28914918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4819158.

The product of its digits is 41472, while the sum is 42.

The square root of 28914918 is about 5377.2593391057. The cubic root of 28914918 is about 306.9309297942.

The spelling of 28914918 in words is "twenty-eight million, nine hundred fourteen thousand, nine hundred eighteen".