33860821 has 8 divisors (see below), whose sum is σ = 36616320. Its totient is φ = 31190208.

The previous prime is 33860797. The next prime is 33860837. The reversal of 33860821 is 12806833.

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 33860821 - 2²⁵ = 306389 is a prime.

It is a super-2 number, since 2×33860821² = 2293110397588082, 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 (33860861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20391 + ... + 21988.

It is an arithmetic number, because the mean of its divisors is an integer number (4577040).

Almost surely, 2^33860821 is an apocalyptic number.

It is an amenable number.

33860821 is a deficient number, since it is larger than the sum of its proper divisors (2755499).

33860821 is a wasteful number, since it uses less digits than its factorization.

33860821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42443.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 33860821 is about 5819.0051555227. The cubic root of 33860821 is about 323.5185305516.

The spelling of 33860821 in words is "thirty-three million, eight hundred sixty thousand, eight hundred twenty-one".