33035981 has 16 divisors (see below), whose sum is σ = 39823488. Its totient is φ = 27033600.

The previous prime is 33035957. The next prime is 33035993. The reversal of 33035981 is 18953033.

It is a de Polignac number, because none of the positive numbers 2^k-33035981 is a prime.

It is a super-2 number, since 2×33035981² = 2182752081264722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33035921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461 + ... + 8141.

It is an arithmetic number, because the mean of its divisors is an integer number (2488968).

Almost surely, 2^33035981 is an apocalyptic number.

It is an amenable number.

33035981 is a deficient number, since it is larger than the sum of its proper divisors (6787507).

33035981 is a wasteful number, since it uses less digits than its factorization.

33035981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7732.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 33035981 is about 5747.6935374113. The cubic root of 33035981 is about 320.8699667096.

The spelling of 33035981 in words is "thirty-three million, thirty-five thousand, nine hundred eighty-one".