16933021 has 8 divisors (see below), whose sum is σ = 19393344. Its totient is φ = 14483040.

The previous prime is 16933001. The next prime is 16933031. The reversal of 16933021 is 12033961.

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 16933021 - 2²¹ = 14835869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16933001) 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, 1326 + ... + 5968.

It is an arithmetic number, because the mean of its divisors is an integer number (2424168).

Almost surely, 2^16933021 is an apocalyptic number.

It is an amenable number.

16933021 is a deficient number, since it is larger than the sum of its proper divisors (2460323).

16933021 is an equidigital number, since it uses as much as digits as its factorization.

16933021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5171.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 16933021 is about 4114.9752125620. The cubic root of 16933021 is about 256.7900246592.

Adding to 16933021 its reverse (12033961), we get a palindrome (28966982).

The spelling of 16933021 in words is "sixteen million, nine hundred thirty-three thousand, twenty-one".