33190990 has 32 divisors (see below), whose sum is σ = 68796864. Its totient is φ = 11293440.

The previous prime is 33190979. The next prime is 33190999. The reversal of 33190990 is 9909133.

It is a happy number.

It is a super-2 number, since 2×33190990² = 2203283634360200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33190999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7860 + ... + 11320.

It is an arithmetic number, because the mean of its divisors is an integer number (2149902).

Almost surely, 2^33190990 is an apocalyptic number.

33190990 is an abundant number, since it is smaller than the sum of its proper divisors (35605874).

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

33190990 is a wasteful number, since it uses less digits than its factorization.

33190990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3612.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 33190990 is about 5761.1622091380. The cubic root of 33190990 is about 321.3710379800.

The spelling of 33190990 in words is "thirty-three million, one hundred ninety thousand, nine hundred ninety".