33213332 has 6 divisors (see below), whose sum is σ = 58123338. Its totient is φ = 16606664.

The previous prime is 33213331. The next prime is 33213361. The reversal of 33213332 is 23331233.

It can be written as a sum of positive squares in only one way, i.e., 33131536 + 81796 = 5756^2 + 286^2 .

It is a super-2 number, since 2×33213332² = 2206250845084448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33213331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4151663 + ... + 4151670.

It is an arithmetic number, because the mean of its divisors is an integer number (9687223).

Almost surely, 2^33213332 is an apocalyptic number.

It is an amenable number.

33213332 is a deficient number, since it is larger than the sum of its proper divisors (24910006).

33213332 is a wasteful number, since it uses less digits than its factorization.

33213332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8303337 (or 8303335 counting only the distinct ones).

The product of its digits is 972, while the sum is 20.

The square root of 33213332 is about 5763.1009014245. The cubic root of 33213332 is about 321.4431304493.

Adding to 33213332 its reverse (23331233), we get a palindrome (56544565).

The spelling of 33213332 in words is "thirty-three million, two hundred thirteen thousand, three hundred thirty-two".