16321274 has 4 divisors (see below), whose sum is σ = 24481914. Its totient is φ = 8160636.

The previous prime is 16321271. The next prime is 16321289. The reversal of 16321274 is 47212361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 265225 = 4007^2 + 515^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16321271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4080317 + ... + 4080320.

Almost surely, 2^16321274 is an apocalyptic number.

16321274 is a deficient number, since it is larger than the sum of its proper divisors (8160640).

16321274 is an equidigital number, since it uses as much as digits as its factorization.

16321274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160639.

The product of its digits is 2016, while the sum is 26.

The square root of 16321274 is about 4039.9596532639. The cubic root of 16321274 is about 253.6596284104.

The spelling of 16321274 in words is "sixteen million, three hundred twenty-one thousand, two hundred seventy-four".