33942290 has 8 divisors (see below), whose sum is σ = 61096140. Its totient is φ = 13576912.

The previous prime is 33942289. The next prime is 33942317. The reversal of 33942290 is 9224933.

It can be written as a sum of positive squares in 2 ways, for example, as 33790969 + 151321 = 5813^2 + 389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1697105 + ... + 1697124.

Almost surely, 2^33942290 is an apocalyptic number.

33942290 is a deficient number, since it is larger than the sum of its proper divisors (27153850).

33942290 is a wasteful number, since it uses less digits than its factorization.

33942290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3394236.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 33942290 is about 5826.0012015103. The cubic root of 33942290 is about 323.7777841720. Note that the first 4 decimals are identical.

The spelling of 33942290 in words is "thirty-three million, nine hundred forty-two thousand, two hundred ninety".