33020916 has 48 divisors (see below), whose sum is σ = 80965248. Its totient is φ = 10454400.

The previous prime is 33020903. The next prime is 33020927. The reversal of 33020916 is 61902033.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49626 + ... + 50286.

It is an arithmetic number, because the mean of its divisors is an integer number (1686776).

Almost surely, 2^33020916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33020916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40482624).

33020916 is an abundant number, since it is smaller than the sum of its proper divisors (47944332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33020916 is a wasteful number, since it uses less digits than its factorization.

33020916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 33020916 is about 5746.3828622882. The cubic root of 33020916 is about 320.8211851400.

Adding to 33020916 its reverse (61902033), we get a palindrome (94922949).

The spelling of 33020916 in words is "thirty-three million, twenty thousand, nine hundred sixteen".