33664736 has 48 divisors (see below), whose sum is σ = 76368096. Its totient is φ = 14309376.

The previous prime is 33664727. The next prime is 33664747. The reversal of 33664736 is 63746633.

It is a super-2 number, since 2×33664736² = 2266628899899392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33664736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30140 + ... + 31236.

It is an arithmetic number, because the mean of its divisors is an integer number (1591002).

Almost surely, 2^33664736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33664736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38184048).

33664736 is an abundant number, since it is smaller than the sum of its proper divisors (42703360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33664736 is a wasteful number, since it uses less digits than its factorization.

33664736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1251 (or 1243 counting only the distinct ones).

The product of its digits is 163296, while the sum is 38.

The square root of 33664736 is about 5802.1320219381. The cubic root of 33664736 is about 322.8928322017.

The spelling of 33664736 in words is "thirty-three million, six hundred sixty-four thousand, seven hundred thirty-six".