33280120 has 16 divisors (see below), whose sum is σ = 74880360. Its totient is φ = 13312032.

The previous prime is 33280109. The next prime is 33280123. The reversal of 33280120 is 2108233.

It is a happy number.

It is a super-2 number, since 2×33280120² = 2215132774428800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33280123) 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, 415962 + ... + 416041.

Almost surely, 2^33280120 is an apocalyptic number.

It is an amenable number.

33280120 is an abundant number, since it is smaller than the sum of its proper divisors (41600240).

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

33280120 is a wasteful number, since it uses less digits than its factorization.

33280120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832014 (or 832010 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 33280120 is about 5768.8924413617. The cubic root of 33280120 is about 321.6584472949.

Adding to 33280120 its reverse (2108233), we get a palindrome (35388353).

The spelling of 33280120 in words is "thirty-three million, two hundred eighty thousand, one hundred twenty".