33821481 has 8 divisors (see below), whose sum is σ = 45132160. Its totient is φ = 22529232.

The previous prime is 33821467. The next prime is 33821503. The reversal of 33821481 is 18412833.

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

It is not a de Polignac number, because 33821481 - 2¹⁷ = 33690409 is a prime.

It is a super-2 number, since 2×33821481² = 2287785154066722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (33821981) 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, 480 + ... + 8238.

It is an arithmetic number, because the mean of its divisors is an integer number (5641520).

Almost surely, 2^33821481 is an apocalyptic number.

It is an amenable number.

33821481 is a deficient number, since it is larger than the sum of its proper divisors (11310679).

33821481 is a wasteful number, since it uses less digits than its factorization.

33821481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9215.

The product of its digits is 4608, while the sum is 30.

The square root of 33821481 is about 5815.6238702309. The cubic root of 33821481 is about 323.3931924697.

The spelling of 33821481 in words is "thirty-three million, eight hundred twenty-one thousand, four hundred eighty-one".