33287013 has 12 divisors (see below), whose sum is σ = 49381228. Its totient is φ = 21591360.

The previous prime is 33287011. The next prime is 33287057. The reversal of 33287013 is 31078233.

It can be written as a sum of positive squares in 2 ways, for example, as 20088324 + 13198689 = 4482^2 + 3633^2 .

It is not a de Polignac number, because 33287013 - 2¹ = 33287011 is a prime.

It is a super-2 number, since 2×33287013² = 2216050468924338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33287011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49648 + ... + 50313.

Almost surely, 2^33287013 is an apocalyptic number.

It is an amenable number.

33287013 is a deficient number, since it is larger than the sum of its proper divisors (16094215).

33287013 is a wasteful number, since it uses less digits than its factorization.

33287013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100004 (or 100001 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 33287013 is about 5769.4898387986. The cubic root of 33287013 is about 321.6806531305.

The spelling of 33287013 in words is "thirty-three million, two hundred eighty-seven thousand, thirteen".