33330913 has 8 divisors (see below), whose sum is σ = 41555520. Its totient is φ = 25972080.

The previous prime is 33330911. The next prime is 33330917. The reversal of 33330913 is 31903333.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33330913 - 2¹ = 33330911 is a prime.

It is a super-2 number, since 2×33330913² = 2221899522827138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33330911) 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, 216358 + ... + 216511.

It is an arithmetic number, because the mean of its divisors is an integer number (5194440).

Almost surely, 2^33330913 is an apocalyptic number.

It is an amenable number.

33330913 is a deficient number, since it is larger than the sum of its proper divisors (8224607).

33330913 is a wasteful number, since it uses less digits than its factorization.

33330913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432887.

The product of its (nonzero) digits is 2187, while the sum is 25.

The square root of 33330913 is about 5773.2930810760. The cubic root of 33330913 is about 321.8220053262.

It can be divided in two parts, 33330 and 913, that added together give a palindrome (34243).

The spelling of 33330913 in words is "thirty-three million, three hundred thirty thousand, nine hundred thirteen".