33330413 has 4 divisors (see below), whose sum is σ = 33787068. Its totient is φ = 32873760.

The previous prime is 33330373. The next prime is 33330433. The reversal of 33330413 is 31403333.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22486564 + 10843849 = 4742^2 + 3293^2 .

It is a cyclic number.

It is not a de Polignac number, because 33330413 - 2²⁴ = 16553197 is a prime.

It is a super-2 number, since 2×33330413² = 2221832861501138, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33330433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228218 + ... + 228363.

It is an arithmetic number, because the mean of its divisors is an integer number (8446767).

Almost surely, 2^33330413 is an apocalyptic number.

It is an amenable number.

33330413 is a deficient number, since it is larger than the sum of its proper divisors (456655).

33330413 is an equidigital number, since it uses as much as digits as its factorization.

33330413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456654.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 33330413 is about 5773.2497780713. The cubic root of 33330413 is about 321.8203960913.

Adding to 33330413 its reverse (31403333), we get a palindrome (64733746).

The spelling of 33330413 in words is "thirty-three million, three hundred thirty thousand, four hundred thirteen".