33220985 has 8 divisors (see below), whose sum is σ = 45560256. Its totient is φ = 22780080.

The previous prime is 33220981. The next prime is 33221003. The reversal of 33220985 is 58902233.

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

It is not a de Polignac number, because 33220985 - 2² = 33220981 is a prime.

It is a super-2 number, since 2×33220985² = 2207267688740450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33220981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474551 + ... + 474620.

It is an arithmetic number, because the mean of its divisors is an integer number (5695032).

Almost surely, 2^33220985 is an apocalyptic number.

33220985 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

33220985 is a deficient number, since it is larger than the sum of its proper divisors (12339271).

33220985 is an equidigital number, since it uses as much as digits as its factorization.

33220985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949183.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 33220985 is about 5763.7648286515. The cubic root of 33220985 is about 321.4678174772.

The spelling of 33220985 in words is "thirty-three million, two hundred twenty thousand, nine hundred eighty-five".