16987974 has 8 divisors (see below), whose sum is σ = 33975960. Its totient is φ = 5662656.

The previous prime is 16987973. The next prime is 16987987. The reversal of 16987974 is 47978961.

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

16987974 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16987973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1415659 + ... + 1415670.

It is an arithmetic number, because the mean of its divisors is an integer number (4246995).

Almost surely, 2^16987974 is an apocalyptic number.

16987974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16987974 is a wasteful number, since it uses less digits than its factorization.

16987974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831334.

The product of its digits is 762048, while the sum is 51.

The square root of 16987974 is about 4121.6470008966. The cubic root of 16987974 is about 257.0675129347.

The spelling of 16987974 in words is "sixteen million, nine hundred eighty-seven thousand, nine hundred seventy-four".