33728049 has 8 divisors (see below), whose sum is σ = 49967520. Its totient is φ = 22485348.

The previous prime is 33728047. The next prime is 33728069. The reversal of 33728049 is 94082733.

33728049 is a `hidden beast` number, since 337 + 280 + 49 = 666.

It is not a de Polignac number, because 33728049 - 2¹ = 33728047 is a prime.

It is a super-2 number, since 2×33728049² = 2275162578692802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33728047) 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, 624567 + ... + 624620.

It is an arithmetic number, because the mean of its divisors is an integer number (6245940).

Almost surely, 2^33728049 is an apocalyptic number.

It is an amenable number.

33728049 is a deficient number, since it is larger than the sum of its proper divisors (16239471).

33728049 is a wasteful number, since it uses less digits than its factorization.

33728049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1249196 (or 1249190 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 33728049 is about 5807.5854707443. The cubic root of 33728049 is about 323.0951260937.

The spelling of 33728049 in words is "thirty-three million, seven hundred twenty-eight thousand, forty-nine".