33891996 has 12 divisors (see below), whose sum is σ = 79081352. Its totient is φ = 11297328.

The previous prime is 33891973. The next prime is 33892009. The reversal of 33891996 is 69919833.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×33891996² = 2297334785728032, which contains 22 as substring.

It is a congruent number.

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, 1412155 + ... + 1412178.

Almost surely, 2^33891996 is an apocalyptic number.

It is an amenable number.

33891996 is an abundant number, since it is smaller than the sum of its proper divisors (45189356).

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

33891996 is a wasteful number, since it uses less digits than its factorization.

33891996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2824340 (or 2824338 counting only the distinct ones).

The product of its digits is 314928, while the sum is 48.

The square root of 33891996 is about 5821.6832617380. The cubic root of 33891996 is about 323.6177858388.

It can be divided in two parts, 33891 and 996, that multiplied together give a triangular number (33755436 = T₈₂₁₆).

The spelling of 33891996 in words is "thirty-three million, eight hundred ninety-one thousand, nine hundred ninety-six".