33330385 has 16 divisors (see below), whose sum is σ = 43745472. Its totient is φ = 24177600.

The previous prime is 33330373. The next prime is 33330433. The reversal of 33330385 is 58303333.

It is not a de Polignac number, because 33330385 - 2¹⁹ = 32806097 is a prime.

It is a super-2 number, since 2×33330385² = 2221829128496450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37567 + ... + 38443.

It is an arithmetic number, because the mean of its divisors is an integer number (2734092).

Almost surely, 2^33330385 is an apocalyptic number.

It is an amenable number.

33330385 is a deficient number, since it is larger than the sum of its proper divisors (10415087).

33330385 is a wasteful number, since it uses less digits than its factorization.

33330385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584.

The product of its (nonzero) digits is 9720, while the sum is 28.

The square root of 33330385 is about 5773.2473530934. The cubic root of 33330385 is about 321.8203059737.

The spelling of 33330385 in words is "thirty-three million, three hundred thirty thousand, three hundred eighty-five".