33866990 has 16 divisors (see below), whose sum is σ = 61090848. Its totient is φ = 13517856.

The previous prime is 33866981. The next prime is 33866993. The reversal of 33866990 is 9966833.

It is a super-2 number, since 2×33866990² = 2293946023320200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33866993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1664 + ... + 8396.

It is an arithmetic number, because the mean of its divisors is an integer number (3818178).

Almost surely, 2^33866990 is an apocalyptic number.

33866990 is a deficient number, since it is larger than the sum of its proper divisors (27223858).

33866990 is a wasteful number, since it uses less digits than its factorization.

33866990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7243.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 33866990 is about 5819.5352048080. The cubic root of 33866990 is about 323.5381763109.

The spelling of 33866990 in words is "thirty-three million, eight hundred sixty-six thousand, nine hundred ninety".