33971380 has 12 divisors (see below), whose sum is σ = 71339940. Its totient is φ = 13588544.

The previous prime is 33971369. The next prime is 33971401. The reversal of 33971380 is 8317933.

It can be written as a sum of positive squares in 2 ways, for example, as 5817744 + 28153636 = 2412^2 + 5306^2 .

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 849265 + ... + 849304.

It is an arithmetic number, because the mean of its divisors is an integer number (5944995).

Almost surely, 2^33971380 is an apocalyptic number.

It is an amenable number.

33971380 is an abundant number, since it is smaller than the sum of its proper divisors (37368560).

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

33971380 is a wasteful number, since it uses less digits than its factorization.

33971380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698578 (or 1698576 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 33971380 is about 5828.4972334213. The cubic root of 33971380 is about 323.8702549146.

The spelling of 33971380 in words is "thirty-three million, nine hundred seventy-one thousand, three hundred eighty".