33091090 has 16 divisors (see below), whose sum is σ = 60234840. Its totient is φ = 13087360.

The previous prime is 33091081. The next prime is 33091109. The reversal of 33091090 is 9019033.

It can be written as a sum of positive squares in 4 ways, for example, as 18429849 + 14661241 = 4293^2 + 3829^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17701 + ... + 19480.

Almost surely, 2^33091090 is an apocalyptic number.

33091090 is a deficient number, since it is larger than the sum of its proper divisors (27143750).

33091090 is a wasteful number, since it uses less digits than its factorization.

33091090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37277.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 33091090 is about 5752.4855497428. The cubic root of 33091090 is about 321.0482874276.

The spelling of 33091090 in words is "thirty-three million, ninety-one thousand, ninety".