33386945 has 4 divisors (see below), whose sum is σ = 40064340. Its totient is φ = 26709552.

The previous prime is 33386939. The next prime is 33386953. The reversal of 33386945 is 54968333.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16313521 + 17073424 = 4039^2 + 4132^2 .

It is a cyclic number.

It is not a de Polignac number, because 33386945 - 2¹⁰ = 33385921 is a prime.

It is a super-2 number, since 2×33386945² = 2229376192866050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3338690 + ... + 3338699.

It is an arithmetic number, because the mean of its divisors is an integer number (10016085).

Almost surely, 2^33386945 is an apocalyptic number.

It is an amenable number.

33386945 is a deficient number, since it is larger than the sum of its proper divisors (6677395).

33386945 is an equidigital number, since it uses as much as digits as its factorization.

33386945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6677394.

The product of its digits is 233280, while the sum is 41.

The square root of 33386945 is about 5778.1437330686. The cubic root of 33386945 is about 322.0022407673.

It can be divided in two parts, 333 and 86945, that added together give a palindrome (87278).

The spelling of 33386945 in words is "thirty-three million, three hundred eighty-six thousand, nine hundred forty-five".