33036981 has 8 divisors (see below), whose sum is σ = 44145504. Its totient is φ = 21976560.

The previous prime is 33036961. The next prime is 33036989. The reversal of 33036981 is 18963033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33036981 - 2⁷ = 33036853 is a prime.

It is a super-2 number, since 2×33036981² = 2182884227188722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33036989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10390 + ... + 13191.

It is an arithmetic number, because the mean of its divisors is an integer number (5518188).

Almost surely, 2^33036981 is an apocalyptic number.

It is an amenable number.

33036981 is a deficient number, since it is larger than the sum of its proper divisors (11108523).

33036981 is a wasteful number, since it uses less digits than its factorization.

33036981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24051.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 33036981 is about 5747.7805281691. The cubic root of 33036981 is about 320.8732042576.

The spelling of 33036981 in words is "thirty-three million, thirty-six thousand, nine hundred eighty-one".