33500013 has 12 divisors (see below), whose sum is σ = 47449920. Its totient is φ = 21019072.

The previous prime is 33500011. The next prime is 33500039. The reversal of 33500013 is 31000533.

It is not a de Polignac number, because 33500013 - 2¹ = 33500011 is a prime.

It is a super-2 number, since 2×33500013² = 2244501742000338, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33499965 and 33500001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33500011) 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, 18453 + ... + 20186.

It is an arithmetic number, because the mean of its divisors is an integer number (3954160).

Almost surely, 2^33500013 is an apocalyptic number.

It is an amenable number.

33500013 is a deficient number, since it is larger than the sum of its proper divisors (13949907).

33500013 is a wasteful number, since it uses less digits than its factorization.

33500013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38676 (or 38659 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 15.

The square root of 33500013 is about 5787.9195744240. The cubic root of 33500013 is about 322.3653280623.

Adding to 33500013 its reverse (31000533), we get a palindrome (64500546).

The spelling of 33500013 in words is "thirty-three million, five hundred thousand, thirteen".