33280090 has 16 divisors (see below), whose sum is σ = 60147360. Its totient is φ = 13258000.

The previous prime is 33280087. The next prime is 33280097. The reversal of 33280090 is 9008233.

It is a happy number.

It is a super-2 number, since 2×33280090² = 2215128780816200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33280097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4120 + ... + 9139.

It is an arithmetic number, because the mean of its divisors is an integer number (3759210).

Almost surely, 2^33280090 is an apocalyptic number.

33280090 is a deficient number, since it is larger than the sum of its proper divisors (26867270).

33280090 is a wasteful number, since it uses less digits than its factorization.

33280090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13517.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 33280090 is about 5768.8898412086. The cubic root of 33280090 is about 321.6583506430.

The spelling of 33280090 in words is "thirty-three million, two hundred eighty thousand, ninety".