28062779 has 8 divisors (see below), whose sum is σ = 28518000. Its totient is φ = 27611136.

The previous prime is 28062743. The next prime is 28062817. The reversal of 28062779 is 97726082.

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

It is a cyclic number.

It is not a de Polignac number, because 28062779 - 2⁸ = 28062523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28052779) 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 7 ways as a sum of consecutive naturals, for example, 17972 + ... + 19470.

It is an arithmetic number, because the mean of its divisors is an integer number (3564750).

Almost surely, 2^28062779 is an apocalyptic number.

28062779 is a deficient number, since it is larger than the sum of its proper divisors (455221).

28062779 is a wasteful number, since it uses less digits than its factorization.

28062779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 28062779 is about 5297.4313586870. The cubic root of 28062779 is about 303.8856730475.

The spelling of 28062779 in words is "twenty-eight million, sixty-two thousand, seven hundred seventy-nine".