33400442 has 12 divisors (see below), whose sum is σ = 52877466. Its totient is φ = 15820920.

The previous prime is 33400417. The next prime is 33400453. The reversal of 33400442 is 24400433.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 17631601 + 15768841 = 4199^2 + 3971^2 .

It is a super-2 number, since 2×33400442² = 2231179051590728, which contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 22409 + ... + 23852.

Almost surely, 2^33400442 is an apocalyptic number.

33400442 is a deficient number, since it is larger than the sum of its proper divisors (19477024).

33400442 is a wasteful number, since it uses less digits than its factorization.

33400442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46301 (or 46282 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 33400442 is about 5779.3115506953. The cubic root of 33400442 is about 322.0456257763.

Adding to 33400442 its reverse (24400433), we get a palindrome (57800875).

Subtracting from 33400442 its reverse (24400433), we obtain a palindrome (9000009).

The spelling of 33400442 in words is "thirty-three million, four hundred thousand, four hundred forty-two".