33420881 has 8 divisors (see below), whose sum is σ = 36125544. Its totient is φ = 30735360.

The previous prime is 33420869. The next prime is 33420889. The reversal of 33420881 is 18802433.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1960000 + 31460881 = 1400^2 + 5609^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33420881 is a prime.

It is a super-2 number, since 2×33420881² = 2233910573632322, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33420889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1040 + ... + 8241.

It is an arithmetic number, because the mean of its divisors is an integer number (4515693).

Almost surely, 2^33420881 is an apocalyptic number.

It is an amenable number.

33420881 is a deficient number, since it is larger than the sum of its proper divisors (2704663).

33420881 is a wasteful number, since it uses less digits than its factorization.

33420881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9571.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 33420881 is about 5781.0795704609. The cubic root of 33420881 is about 322.1113030344. Note that the first 3 decimals are identical.

The spelling of 33420881 in words is "thirty-three million, four hundred twenty thousand, eight hundred eighty-one".