28068794 has 8 divisors (see below), whose sum is σ = 45341940. Its totient is φ = 12954816.

The previous prime is 28068791. The next prime is 28068841. The reversal of 28068794 is 49786082.

It can be written as a sum of positive squares in 2 ways, for example, as 21743569 + 6325225 = 4663^2 + 2515^2 .

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

It is a super-2 number, since 2×28068794² = 1575714393228872, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28068791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539759 + ... + 539810.

Almost surely, 2^28068794 is an apocalyptic number.

28068794 is a deficient number, since it is larger than the sum of its proper divisors (17273146).

28068794 is a wasteful number, since it uses less digits than its factorization.

28068794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079584.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 28068794 is about 5297.9990562476. Note that the first 3 decimals coincide. The cubic root of 28068794 is about 303.9073832012.

The spelling of 28068794 in words is "twenty-eight million, sixty-eight thousand, seven hundred ninety-four".