33213442 has 8 divisors (see below), whose sum is σ = 50286096. Its totient is φ = 16451412.

The previous prime is 33213437. The next prime is 33213469. The reversal of 33213442 is 24431233.

It is a happy number.

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

It is a super-2 number, since 2×33213442² = 2206265458974728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77388 + ... + 77815.

It is an arithmetic number, because the mean of its divisors is an integer number (6285762).

Almost surely, 2^33213442 is an apocalyptic number.

33213442 is a deficient number, since it is larger than the sum of its proper divisors (17072654).

33213442 is a wasteful number, since it uses less digits than its factorization.

33213442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155312.

The product of its digits is 1728, while the sum is 22.

The square root of 33213442 is about 5763.1104448900. The cubic root of 33213442 is about 321.4434853139.

Adding to 33213442 its reverse (24431233), we get a palindrome (57644675).

The spelling of 33213442 in words is "thirty-three million, two hundred thirteen thousand, four hundred forty-two".