33494981 has 8 divisors (see below), whose sum is σ = 38193624. Its totient is φ = 29099520.

The previous prime is 33494963. The next prime is 33494999. The reversal of 33494981 is 18949433.

It is an interprime number because it is at equal distance from previous prime (33494963) and next prime (33494999).

It can be written as a sum of positive squares in 4 ways, for example, as 8584900 + 24910081 = 2930^2 + 4991^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33494981 is a prime.

It is a super-2 number, since 2×33494981² = 2243827504380722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33494921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75560 + ... + 76001.

It is an arithmetic number, because the mean of its divisors is an integer number (4774203).

Almost surely, 2^33494981 is an apocalyptic number.

It is an amenable number.

33494981 is a deficient number, since it is larger than the sum of its proper divisors (4698643).

33494981 is a wasteful number, since it uses less digits than its factorization.

33494981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151591.

The product of its digits is 93312, while the sum is 41.

The square root of 33494981 is about 5787.4848595914. The cubic root of 33494981 is about 322.3491865407.

The spelling of 33494981 in words is "thirty-three million, four hundred ninety-four thousand, nine hundred eighty-one".