33402222 has 36 divisors (see below), whose sum is σ = 84189456. Its totient is φ = 9543240.

The previous prime is 33402211. The next prime is 33402251. The reversal of 33402222 is 22220433.

It is a super-2 number, since 2×33402222² = 2231416869074568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 33402195 and 33402204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 18054 + ... + 19817.

It is an arithmetic number, because the mean of its divisors is an integer number (2338596).

Almost surely, 2^33402222 is an apocalyptic number.

33402222 is an abundant number, since it is smaller than the sum of its proper divisors (50787234).

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

33402222 is a wasteful number, since it uses less digits than its factorization.

33402222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37893 (or 37883 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 33402222 is about 5779.4655462248. The cubic root of 33402222 is about 322.0513465692.

Adding to 33402222 its reverse (22220433), we get a palindrome (55622655).

The spelling of 33402222 in words is "thirty-three million, four hundred two thousand, two hundred twenty-two".