33220869 has 16 divisors (see below), whose sum is σ = 49351680. Its totient is φ = 19704560.

The previous prime is 33220853. The next prime is 33220879. The reversal of 33220869 is 96802233.

It is a cyclic number.

It is not a de Polignac number, because 33220869 - 2⁴ = 33220853 is a prime.

It is a super-2 number, since 2×33220869² = 2207252274230322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33220879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9159 + ... + 12260.

It is an arithmetic number, because the mean of its divisors is an integer number (3084480).

Almost surely, 2^33220869 is an apocalyptic number.

It is an amenable number.

33220869 is a deficient number, since it is larger than the sum of its proper divisors (16130811).

33220869 is a wasteful number, since it uses less digits than its factorization.

33220869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21480.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 33220869 is about 5763.7547657755. The cubic root of 33220869 is about 321.4674433130.

The spelling of 33220869 in words is "thirty-three million, two hundred twenty thousand, eight hundred sixty-nine".