33223398 has 32 divisors (see below), whose sum is σ = 72040416. Its totient is φ = 10153728.

The previous prime is 33223397. The next prime is 33223403. The reversal of 33223398 is 89332233.

It is a super-2 number, since 2×33223398² = 2207588349332808, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33223397) 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 15 ways as a sum of consecutive naturals, for example, 10890 + ... + 13602.

It is an arithmetic number, because the mean of its divisors is an integer number (2251263).

Almost surely, 2^33223398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33223398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36020208).

33223398 is an abundant number, since it is smaller than the sum of its proper divisors (38817018).

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

33223398 is a wasteful number, since it uses less digits than its factorization.

33223398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2888.

The product of its digits is 23328, while the sum is 33.

The square root of 33223398 is about 5763.9741498379. The cubic root of 33223398 is about 321.4756005402.

The spelling of 33223398 in words is "thirty-three million, two hundred twenty-three thousand, three hundred ninety-eight".