28874833 has 6 divisors (see below), whose sum is σ = 31267014. Its totient is φ = 26653536.

The previous prime is 28874831. The next prime is 28874843. The reversal of 28874833 is 33847882.

It can be written as a sum of positive squares in 3 ways, for example, as 2331729 + 26543104 = 1527^2 + 5152^2 .

It is not a de Polignac number, because 28874833 - 2¹ = 28874831 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28874833.

It is not an unprimeable number, because it can be changed into a prime (28874831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85260 + ... + 85597.

It is an arithmetic number, because the mean of its divisors is an integer number (5211169).

Almost surely, 2^28874833 is an apocalyptic number.

It is an amenable number.

28874833 is a deficient number, since it is larger than the sum of its proper divisors (2392181).

28874833 is a wasteful number, since it uses less digits than its factorization.

28874833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170883 (or 170870 counting only the distinct ones).

The product of its digits is 258048, while the sum is 43.

The square root of 28874833 is about 5373.5307759424. The cubic root of 28874833 is about 306.7890305376.

The spelling of 28874833 in words is "twenty-eight million, eight hundred seventy-four thousand, eight hundred thirty-three".