28263777 has 8 divisors (see below), whose sum is σ = 38984640. Its totient is φ = 18192720.

The previous prime is 28263769. The next prime is 28263793. The reversal of 28263777 is 77736282.

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

It is not a de Polignac number, because 28263777 - 2³ = 28263769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28263737) 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, 162349 + ... + 162522.

It is an arithmetic number, because the mean of its divisors is an integer number (4873080).

Almost surely, 2^28263777 is an apocalyptic number.

It is an amenable number.

28263777 is a deficient number, since it is larger than the sum of its proper divisors (10720863).

28263777 is a wasteful number, since it uses less digits than its factorization.

28263777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324903.

The product of its digits is 197568, while the sum is 42.

The square root of 28263777 is about 5316.3687795336. The cubic root of 28263777 is about 304.6094688119.

The spelling of 28263777 in words is "twenty-eight million, two hundred sixty-three thousand, seven hundred seventy-seven".