33320001 has 32 divisors (see below), whose sum is σ = 52778880. Its totient is φ = 18432000.

The previous prime is 33319931. The next prime is 33320011. The reversal of 33320001 is 10002333.

It is a happy number.

It is not a de Polignac number, because 33320001 - 2⁷ = 33319873 is a prime.

It is a super-2 number, since 2×33320001² = 2220444933280002, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33320011) 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 31 ways as a sum of consecutive naturals, for example, 42945 + ... + 43713.

It is an arithmetic number, because the mean of its divisors is an integer number (1649340).

Almost surely, 2^33320001 is an apocalyptic number.

33320001 is the 3333-rd octagonal number.

It is an amenable number.

33320001 is a deficient number, since it is larger than the sum of its proper divisors (19458879).

33320001 is a wasteful number, since it uses less digits than its factorization.

33320001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 33320001 is about 5772.3479624846. The cubic root of 33320001 is about 321.7868817257.

Adding to 33320001 its reverse (10002333), we get a palindrome (43322334).

The spelling of 33320001 in words is "thirty-three million, three hundred twenty thousand, one".