33253664 has 24 divisors (see below), whose sum is σ = 65618028. Its totient is φ = 16588800.

The previous prime is 33253657. The next prime is 33253697. The reversal of 33253664 is 46635233.

It can be written as a sum of positive squares in 2 ways, for example, as 32581264 + 672400 = 5708^2 + 820^2 .

It is a super-2 number, since 2×33253664² = 2211612338849792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 33253664.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 17564 + ... + 19364.

Almost surely, 2^33253664 is an apocalyptic number.

It is an amenable number.

33253664 is a deficient number, since it is larger than the sum of its proper divisors (32364364).

33253664 is a wasteful number, since it uses less digits than its factorization.

33253664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388 (or 2380 counting only the distinct ones).

The product of its digits is 38880, while the sum is 32.

The square root of 33253664 is about 5766.5989976762. The cubic root of 33253664 is about 321.5731906729.

Adding to 33253664 its reverse (46635233), we get a palindrome (79888897).

The spelling of 33253664 in words is "thirty-three million, two hundred fifty-three thousand, six hundred sixty-four".