28997794 has 8 divisors (see below), whose sum is σ = 49710528. Its totient is φ = 12427620.

The previous prime is 28997777. The next prime is 28997797. The reversal of 28997794 is 49779982.

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

It is not an unprimeable number, because it can be changed into a prime (28997797) 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, 1035622 + ... + 1035649.

It is an arithmetic number, because the mean of its divisors is an integer number (6213816).

Almost surely, 2^28997794 is an apocalyptic number.

28997794 is a deficient number, since it is larger than the sum of its proper divisors (20712734).

28997794 is a wasteful number, since it uses less digits than its factorization.

28997794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2071280.

The product of its digits is 2286144, while the sum is 55.

The square root of 28997794 is about 5384.9599812812. The cubic root of 28997794 is about 307.2238921056.

It can be divided in two parts, 28997 and 794, that added together give a cube (29791 = 31³).

The spelling of 28997794 in words is "twenty-eight million, nine hundred ninety-seven thousand, seven hundred ninety-four".