16887274 has 4 divisors (see below), whose sum is σ = 25330914. Its totient is φ = 8443636.

The previous prime is 16887271. The next prime is 16887287. The reversal of 16887274 is 47278861.

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., 14115049 + 2772225 = 3757^2 + 1665^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16887274.

It is not an unprimeable number, because it can be changed into a prime (16887271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4221817 + ... + 4221820.

Almost surely, 2^16887274 is an apocalyptic number.

16887274 is a deficient number, since it is larger than the sum of its proper divisors (8443640).

16887274 is an equidigital number, since it uses as much as digits as its factorization.

16887274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8443639.

The product of its digits is 150528, while the sum is 43.

The square root of 16887274 is about 4109.4128534378. The cubic root of 16887274 is about 256.5585643222.

It can be divided in two parts, 16887 and 274, that added together give a square (17161 = 131²).

The spelling of 16887274 in words is "sixteen million, eight hundred eighty-seven thousand, two hundred seventy-four".