33885220 has 24 divisors (see below), whose sum is σ = 71342208. Its totient is φ = 13519200.

The previous prime is 33885217. The next prime is 33885221. The reversal of 33885220 is 2258833.

It is a super-2 number, since 2×33885220² = 2296416268896800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (33885221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6655 + ... + 10585.

It is an arithmetic number, because the mean of its divisors is an integer number (2972592).

Almost surely, 2^33885220 is an apocalyptic number.

It is an amenable number.

33885220 is an abundant number, since it is smaller than the sum of its proper divisors (37456988).

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

33885220 is a wasteful number, since it uses less digits than its factorization.

33885220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4371 (or 4369 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 33885220 is about 5821.1012703783. The cubic root of 33885220 is about 323.5962175185.

It can be divided in two parts, 338 and 85220, that added together give a palindrome (85558).

The spelling of 33885220 in words is "thirty-three million, eight hundred eighty-five thousand, two hundred twenty".