28614779 has 8 divisors (see below), whose sum is σ = 30343440. Its totient is φ = 26908416.

The previous prime is 28614763. The next prime is 28614811. The reversal of 28614779 is 97741682.

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 28614779 - 2⁴ = 28614763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28614379) 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, 2894 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (3792930).

Almost surely, 2^28614779 is an apocalyptic number.

28614779 is a deficient number, since it is larger than the sum of its proper divisors (1728661).

28614779 is a wasteful number, since it uses less digits than its factorization.

28614779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149.

The product of its digits is 169344, while the sum is 44.

The square root of 28614779 is about 5349.2783625457. The cubic root of 28614779 is about 305.8652453211.

The spelling of 28614779 in words is "twenty-eight million, six hundred fourteen thousand, seven hundred seventy-nine".