33924021 has 4 divisors (see below), whose sum is σ = 45232032. Its totient is φ = 22616012.

The previous prime is 33924019. The next prime is 33924031. The reversal of 33924021 is 12042933.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33924021 - 2¹ = 33924019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33923982 and 33924000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33924031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5654001 + ... + 5654006.

It is an arithmetic number, because the mean of its divisors is an integer number (11308008).

Almost surely, 2^33924021 is an apocalyptic number.

It is an amenable number.

33924021 is a deficient number, since it is larger than the sum of its proper divisors (11308011).

33924021 is a wasteful number, since it uses less digits than its factorization.

33924021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11308010.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 33924021 is about 5824.4331054619. The cubic root of 33924021 is about 323.7196840075.

Adding to 33924021 its reverse (12042933), we get a palindrome (45966954).

The spelling of 33924021 in words is "thirty-three million, nine hundred twenty-four thousand, twenty-one".