28779068 has 24 divisors (see below), whose sum is σ = 51871680. Its totient is φ = 13965120.

The previous prime is 28779059. The next prime is 28779073. The reversal of 28779068 is 86097782.

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, 18530 + ... + 20022.

It is an arithmetic number, because the mean of its divisors is an integer number (2161320).

Almost surely, 2^28779068 is an apocalyptic number.

It is an amenable number.

28779068 is a deficient number, since it is larger than the sum of its proper divisors (23092612).

28779068 is a wasteful number, since it uses less digits than its factorization.

28779068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1637 (or 1635 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 28779068 is about 5364.6125675579. The cubic root of 28779068 is about 306.4494938987.

The spelling of 28779068 in words is "twenty-eight million, seven hundred seventy-nine thousand, sixty-eight".