33436821 has 8 divisors (see below), whose sum is σ = 48635424. Its totient is φ = 20264720.

The previous prime is 33436801. The next prime is 33436859. The reversal of 33436821 is 12863433.

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

It is a cyclic number.

It is not a de Polignac number, because 33436821 - 2¹¹ = 33434773 is a prime.

It is a super-2 number, since 2×33436821² = 2236041997172082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33436801) 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, 506586 + ... + 506651.

It is an arithmetic number, because the mean of its divisors is an integer number (6079428).

Almost surely, 2^33436821 is an apocalyptic number.

It is an amenable number.

33436821 is a deficient number, since it is larger than the sum of its proper divisors (15198603).

33436821 is a wasteful number, since it uses less digits than its factorization.

33436821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013251.

The product of its digits is 10368, while the sum is 30.

The square root of 33436821 is about 5782.4580413523. The cubic root of 33436821 is about 322.1625049372.

The spelling of 33436821 in words is "thirty-three million, four hundred thirty-six thousand, eight hundred twenty-one".