33990233 has 8 divisors (see below), whose sum is σ = 35488200. Its totient is φ = 32514048.

The previous prime is 33990223. The next prime is 33990247. The reversal of 33990233 is 33209933.

It can be written as a sum of positive squares in 4 ways, for example, as 16908544 + 17081689 = 4112^2 + 4133^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 33990233 - 2⁴ = 33990217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33990233.

It is not an unprimeable number, because it can be changed into a prime (33990223) 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, 2216 + ... + 8537.

It is an arithmetic number, because the mean of its divisors is an integer number (4436025).

Almost surely, 2^33990233 is an apocalyptic number.

It is an amenable number.

33990233 is a deficient number, since it is larger than the sum of its proper divisors (1497967).

33990233 is a wasteful number, since it uses less digits than its factorization.

33990233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10891.

The product of its (nonzero) digits is 13122, while the sum is 32.

The square root of 33990233 is about 5830.1143213491. The cubic root of 33990233 is about 323.9301562858.

The spelling of 33990233 in words is "thirty-three million, nine hundred ninety thousand, two hundred thirty-three".