16940037 has 4 divisors (see below), whose sum is σ = 22586720. Its totient is φ = 11293356.

The previous prime is 16940009. The next prime is 16940057. The reversal of 16940037 is 73004961.

It is a happy number.

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 not a de Polignac number, because 16940037 - 2²⁴ = 162821 is a prime.

It is a super-2 number, since 2×16940037² = 573929707122738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16939986 and 16940013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16940057) 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, 2823337 + ... + 2823342.

It is an arithmetic number, because the mean of its divisors is an integer number (5646680).

Almost surely, 2^16940037 is an apocalyptic number.

It is an amenable number.

16940037 is a deficient number, since it is larger than the sum of its proper divisors (5646683).

16940037 is an equidigital number, since it uses as much as digits as its factorization.

16940037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5646682.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 16940037 is about 4115.8276202970. The cubic root of 16940037 is about 256.8254857471.

Adding to 16940037 its reverse (73004961), we get a palindrome (89944998).

The spelling of 16940037 in words is "sixteen million, nine hundred forty thousand, thirty-seven".