33987916 has 6 divisors (see below), whose sum is σ = 59478860. Its totient is φ = 16993956.

The previous prime is 33987907. The next prime is 33987917. The reversal of 33987916 is 61978933.

It is not an unprimeable number, because it can be changed into a prime (33987917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4248486 + ... + 4248493.

Almost surely, 2^33987916 is an apocalyptic number.

It is an amenable number.

33987916 is a deficient number, since it is larger than the sum of its proper divisors (25490944).

33987916 is a wasteful number, since it uses less digits than its factorization.

33987916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8496983 (or 8496981 counting only the distinct ones).

The product of its digits is 244944, while the sum is 46.

The square root of 33987916 is about 5829.9156083086. The cubic root of 33987916 is about 323.9227957084.

The spelling of 33987916 in words is "thirty-three million, nine hundred eighty-seven thousand, nine hundred sixteen".