33684740 has 12 divisors (see below), whose sum is σ = 70737996. Its totient is φ = 13473888.

The previous prime is 33684727. The next prime is 33684751. The reversal of 33684740 is 4748633.

It can be written as a sum of positive squares in 2 ways, for example, as 24780484 + 8904256 = 4978^2 + 2984^2 .

It is a super-2 number, since 2×33684740² = 2269323417735200, 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 33684740.

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, 842099 + ... + 842138.

It is an arithmetic number, because the mean of its divisors is an integer number (5894833).

Almost surely, 2^33684740 is an apocalyptic number.

It is an amenable number.

33684740 is an abundant number, since it is smaller than the sum of its proper divisors (37053256).

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

33684740 is a wasteful number, since it uses less digits than its factorization.

33684740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684246 (or 1684244 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 33684740 is about 5803.8556150201. The cubic root of 33684740 is about 322.9567751683.

The spelling of 33684740 in words is "thirty-three million, six hundred eighty-four thousand, seven hundred forty".