28974785 has 8 divisors (see below), whose sum is σ = 39736896. Its totient is φ = 19868400.

The previous prime is 28974769. The next prime is 28974793. The reversal of 28974785 is 58747982.

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

It is not a de Polignac number, because 28974785 - 2⁴ = 28974769 is a prime.

It is a Duffinian 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, 413891 + ... + 413960.

It is an arithmetic number, because the mean of its divisors is an integer number (4967112).

Almost surely, 2^28974785 is an apocalyptic number.

It is an amenable number.

28974785 is a deficient number, since it is larger than the sum of its proper divisors (10762111).

28974785 is an equidigital number, since it uses as much as digits as its factorization.

28974785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827863.

The product of its digits is 1128960, while the sum is 50.

The square root of 28974785 is about 5382.8231440388. The cubic root of 28974785 is about 307.1426125317.

The spelling of 28974785 in words is "twenty-eight million, nine hundred seventy-four thousand, seven hundred eighty-five".