33338889 has 24 divisors (see below), whose sum is σ = 49612992. Its totient is φ = 21561120.

The previous prime is 33338873. The next prime is 33338909. The reversal of 33338889 is 98883333.

It is not a de Polignac number, because 33338889 - 2⁴ = 33338873 is a prime.

It is a super-2 number, since 2×33338889² = 2222963039508642, which contains 22 as substring.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33338089) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107044 + ... + 107354.

It is an arithmetic number, because the mean of its divisors is an integer number (2067208).

Almost surely, 2^33338889 is an apocalyptic number.

It is an amenable number.

33338889 is a deficient number, since it is larger than the sum of its proper divisors (16274103).

33338889 is a wasteful number, since it uses less digits than its factorization.

33338889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 634 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 33338889 is about 5773.9838066971. The cubic root of 33338889 is about 321.8476736659.

The spelling of 33338889 in words is "thirty-three million, three hundred thirty-eight thousand, eight hundred eighty-nine".