33305413 has 4 divisors (see below), whose sum is σ = 33325120. Its totient is φ = 33285708.

The previous prime is 33305387. The next prime is 33305417. The reversal of 33305413 is 31450333.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31450333 = 37 ⋅850009.

It is a cyclic number.

It is not a de Polignac number, because 33305413 - 2¹⁷ = 33174341 is a prime.

It is a super-2 number, since 2×33305413² = 2218501070201138, 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 (33305417) 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, 7053 + ... + 10786.

It is an arithmetic number, because the mean of its divisors is an integer number (8331280).

Almost surely, 2^33305413 is an apocalyptic number.

It is an amenable number.

33305413 is a deficient number, since it is larger than the sum of its proper divisors (19707).

33305413 is a wasteful number, since it uses less digits than its factorization.

33305413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19706.

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 33305413 is about 5771.0842135599. The cubic root of 33305413 is about 321.7399138173.

Adding to 33305413 its reverse (31450333), we get a palindrome (64755746).

The spelling of 33305413 in words is "thirty-three million, three hundred five thousand, four hundred thirteen".