28957118 has 8 divisors (see below), whose sum is σ = 43459248. Its totient is φ = 14470704.

The previous prime is 28957091. The next prime is 28957139. The reversal of 28957118 is 81175982.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3455 + ... + 8357.

It is an arithmetic number, because the mean of its divisors is an integer number (5432406).

Almost surely, 2^28957118 is an apocalyptic number.

28957118 is a deficient number, since it is larger than the sum of its proper divisors (14502130).

28957118 is a wasteful number, since it uses less digits than its factorization.

28957118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7858.

The product of its digits is 40320, while the sum is 41.

The square root of 28957118 is about 5381.1818404510. The cubic root of 28957118 is about 307.0801744293.

The spelling of 28957118 in words is "twenty-eight million, nine hundred fifty-seven thousand, one hundred eighteen".