33213822 has 8 divisors (see below), whose sum is σ = 66427656. Its totient is φ = 11071272.

The previous prime is 33213797. The next prime is 33213823. The reversal of 33213822 is 22831233.

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

33213822 is an admirable number.

It is a super-2 number, since 2×33213822² = 2206315943695368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33213792 and 33213801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33213823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2767813 + ... + 2767824.

It is an arithmetic number, because the mean of its divisors is an integer number (8303457).

Almost surely, 2^33213822 is an apocalyptic number.

33213822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

33213822 is a wasteful number, since it uses less digits than its factorization.

33213822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5535642.

The product of its digits is 1728, while the sum is 24.

The square root of 33213822 is about 5763.1434131037. The cubic root of 33213822 is about 321.4447112037. Note that the first 3 decimals are identical.

The spelling of 33213822 in words is "thirty-three million, two hundred thirteen thousand, eight hundred twenty-two".