16940033 has 4 divisors (see below), whose sum is σ = 18480048. Its totient is φ = 15400020.

The previous prime is 16940009. The next prime is 16940057. The reversal of 16940033 is 33004961.

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 an interprime number because it is at equal distance from previous prime (16940009) and next prime (16940057).

It is a cyclic number.

It is not a de Polignac number, because 16940033 - 2¹⁴ = 16923649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16939984 and 16940011.

It is not an unprimeable number, because it can be changed into a prime (16940933) 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, 769991 + ... + 770012.

It is an arithmetic number, because the mean of its divisors is an integer number (4620012).

Almost surely, 2^16940033 is an apocalyptic number.

It is an amenable number.

16940033 is a deficient number, since it is larger than the sum of its proper divisors (1540015).

16940033 is a wasteful number, since it uses less digits than its factorization.

16940033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1540014.

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 16940033 is about 4115.8271343680. The cubic root of 16940033 is about 256.8254655327.

Adding to 16940033 its reverse (33004961), we get a palindrome (49944994).

It can be divided in two parts, 16 and 940033, that added together give a palindrome (940049).

The spelling of 16940033 in words is "sixteen million, nine hundred forty thousand, thirty-three".