33891340 has 36 divisors (see below), whose sum is σ = 82794096. Its totient is φ = 11619552.

The previous prime is 33891331. The next prime is 33891373. The reversal of 33891340 is 4319833.

It is a super-2 number, since 2×33891340² = 2297245853991200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16312 + ... + 18271.

It is an arithmetic number, because the mean of its divisors is an integer number (2299836).

Almost surely, 2^33891340 is an apocalyptic number.

It is an amenable number.

33891340 is an abundant number, since it is smaller than the sum of its proper divisors (48902756).

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

33891340 is a wasteful number, since it uses less digits than its factorization.

33891340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34606 (or 34597 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 33891340 is about 5821.6269203720. The cubic root of 33891340 is about 323.6156978862.

The spelling of 33891340 in words is "thirty-three million, eight hundred ninety-one thousand, three hundred forty".