33404536 has 16 divisors (see below), whose sum is σ = 68327640. Its totient is φ = 15183840.

The previous prime is 33404531. The next prime is 33404543. The reversal of 33404536 is 63540433.

It is a super-2 number, since 2×33404536² = 2231726050750592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33404531) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 189711 + ... + 189886.

Almost surely, 2^33404536 is an apocalyptic number.

It is an amenable number.

33404536 is an abundant number, since it is smaller than the sum of its proper divisors (34923104).

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

33404536 is a wasteful number, since it uses less digits than its factorization.

33404536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379614 (or 379610 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 28.

The square root of 33404536 is about 5779.6657342791. The cubic root of 33404536 is about 322.0587832961.

Adding to 33404536 its reverse (63540433), we get a palindrome (96944969).

The spelling of 33404536 in words is "thirty-three million, four hundred four thousand, five hundred thirty-six".