33280136 has 32 divisors (see below), whose sum is σ = 64817280. Its totient is φ = 16008000.

The previous prime is 33280133. The next prime is 33280171. The reversal of 33280136 is 63108233.

It is a super-2 number, since 2×33280136² = 2215134904356992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33280133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22211 + ... + 23661.

It is an arithmetic number, because the mean of its divisors is an integer number (2025540).

Almost surely, 2^33280136 is an apocalyptic number.

It is an amenable number.

33280136 is a deficient number, since it is larger than the sum of its proper divisors (31537144).

33280136 is a wasteful number, since it uses less digits than its factorization.

33280136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565 (or 1561 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 33280136 is about 5768.8938281095. The cubic root of 33280136 is about 321.6584988425.

Adding to 33280136 its reverse (63108233), we get a palindrome (96388369).

The spelling of 33280136 in words is "thirty-three million, two hundred eighty thousand, one hundred thirty-six".