28917935 has 8 divisors (see below), whose sum is σ = 36742896. Its totient is φ = 21773440.

The previous prime is 28917929. The next prime is 28917949. The reversal of 28917935 is 53971982.

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

It is not a de Polignac number, because 28917935 - 2⁴ = 28917919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 170021 + ... + 170190.

It is an arithmetic number, because the mean of its divisors is an integer number (4592862).

Almost surely, 2^28917935 is an apocalyptic number.

28917935 is a deficient number, since it is larger than the sum of its proper divisors (7824961).

28917935 is a wasteful number, since it uses less digits than its factorization.

28917935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340233.

The product of its digits is 136080, while the sum is 44.

The square root of 28917935 is about 5377.5398650312. The cubic root of 28917935 is about 306.9416045424.

The spelling of 28917935 in words is "twenty-eight million, nine hundred seventeen thousand, nine hundred thirty-five".