33788881 has 12 divisors (see below), whose sum is σ = 40369908. Its totient is φ = 28177632.

The previous prime is 33788869. The next prime is 33788891. The reversal of 33788881 is 18888733.

It can be written as a sum of positive squares in 2 ways, for example, as 12250000 + 21538881 = 3500^2 + 4641^2 .

It is not a de Polignac number, because 33788881 - 2⁷ = 33788753 is a prime.

It is a super-2 number, since 2×33788881² = 2283376958464322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33788861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7506 + ... + 11131.

It is an arithmetic number, because the mean of its divisors is an integer number (3364159).

Almost surely, 2^33788881 is an apocalyptic number.

It is an amenable number.

33788881 is a deficient number, since it is larger than the sum of its proper divisors (6581027).

33788881 is a wasteful number, since it uses less digits than its factorization.

33788881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18688 (or 18681 counting only the distinct ones).

The product of its digits is 258048, while the sum is 46.

The square root of 33788881 is about 5812.8203997715. The cubic root of 33788881 is about 323.2892545101.

The spelling of 33788881 in words is "thirty-three million, seven hundred eighty-eight thousand, eight hundred eighty-one".