16377994 has 8 divisors (see below), whose sum is σ = 24784740. Its totient is φ = 8116416.

The previous prime is 16377979. The next prime is 16377997. The reversal of 16377994 is 49977361.

It can be written as a sum of positive squares in 2 ways, for example, as 11471769 + 4906225 = 3387^2 + 2215^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (16377997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36009 + ... + 36460.

Almost surely, 2^16377994 is an apocalyptic number.

16377994 is a deficient number, since it is larger than the sum of its proper divisors (8406746).

16377994 is a wasteful number, since it uses less digits than its factorization.

16377994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72584.

The product of its digits is 285768, while the sum is 46.

The square root of 16377994 is about 4046.9734370267. The cubic root of 16377994 is about 253.9531295912.

It can be divided in two parts, 16377 and 994, that added together give a palindrome (17371).

The spelling of 16377994 in words is "sixteen million, three hundred seventy-seven thousand, nine hundred ninety-four".