28933777 has 8 divisors (see below), whose sum is σ = 29508480. Its totient is φ = 28362000.

The previous prime is 28933759. The next prime is 28933783. The reversal of 28933777 is 77733982.

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 28933777 - 2⁷ = 28933649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28933787) 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, 38152 + ... + 38902.

It is an arithmetic number, because the mean of its divisors is an integer number (3688560).

Almost surely, 2^28933777 is an apocalyptic number.

It is an amenable number.

28933777 is a deficient number, since it is larger than the sum of its proper divisors (574703).

28933777 is an equidigital number, since it uses as much as digits as its factorization.

28933777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463.

The product of its digits is 444528, while the sum is 46.

The square root of 28933777 is about 5379.0126417401. The cubic root of 28933777 is about 306.9976445193.

It can be divided in two parts, 2893 and 3777, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 28933777 in words is "twenty-eight million, nine hundred thirty-three thousand, seven hundred seventy-seven".