28974337 has 12 divisors (see below), whose sum is σ = 33798036. Its totient is φ = 24766560.

The previous prime is 28974317. The next prime is 28974343. The reversal of 28974337 is 73347982.

It can be written as a sum of positive squares in 2 ways, for example, as 22193521 + 6780816 = 4711^2 + 2604^2 .

It is not a de Polignac number, because 28974337 - 2²³ = 20585729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28974293 and 28974302.

It is not an unprimeable number, because it can be changed into a prime (28974317) 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 11 ways as a sum of consecutive naturals, for example, 25963 + ... + 27055.

It is an arithmetic number, because the mean of its divisors is an integer number (2816503).

Almost surely, 2^28974337 is an apocalyptic number.

It is an amenable number.

28974337 is a deficient number, since it is larger than the sum of its proper divisors (4823699).

28974337 is a wasteful number, since it uses less digits than its factorization.

28974337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648 (or 1641 counting only the distinct ones).

The product of its digits is 254016, while the sum is 43.

The square root of 28974337 is about 5382.7815300270. The cubic root of 28974337 is about 307.1410295392.

The spelling of 28974337 in words is "twenty-eight million, nine hundred seventy-four thousand, three hundred thirty-seven".