28554779 has 8 divisors (see below), whose sum is σ = 31194288. Its totient is φ = 25922560.

The previous prime is 28554767. The next prime is 28554811. The reversal of 28554779 is 97745582.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28554779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28554719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9419 + ... + 12075.

It is an arithmetic number, because the mean of its divisors is an integer number (3899286).

Almost surely, 2^28554779 is an apocalyptic number.

28554779 is a deficient number, since it is larger than the sum of its proper divisors (2639509).

28554779 is a wasteful number, since it uses less digits than its factorization.

28554779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3645.

The product of its digits is 705600, while the sum is 47.

The square root of 28554779 is about 5343.6671864928. The cubic root of 28554779 is about 305.6513144177.

The spelling of 28554779 in words is "twenty-eight million, five hundred fifty-four thousand, seven hundred seventy-nine".