33120856 has 8 divisors (see below), whose sum is σ = 62101620. Its totient is φ = 16560424.

The previous prime is 33120823. The next prime is 33120863. The reversal of 33120856 is 65802133.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×33120856² = 2193982204345472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2070046 + ... + 2070061.

Almost surely, 2^33120856 is an apocalyptic number.

It is an amenable number.

33120856 is a deficient number, since it is larger than the sum of its proper divisors (28980764).

33120856 is a wasteful number, since it uses less digits than its factorization.

33120856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4140113 (or 4140109 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 33120856 is about 5755.0721976358. The cubic root of 33120856 is about 321.1445213826.

Adding to 33120856 its reverse (65802133), we get a palindrome (98922989).

The spelling of 33120856 in words is "thirty-three million, one hundred twenty thousand, eight hundred fifty-six".