16887742 has 8 divisors (see below), whose sum is σ = 25421976. Its totient is φ = 8413752.

The previous prime is 16887733. The next prime is 16887743. The reversal of 16887742 is 24778861.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16887743) 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, 14353 + ... + 15484.

It is an arithmetic number, because the mean of its divisors is an integer number (3177747).

Almost surely, 2^16887742 is an apocalyptic number.

16887742 is a deficient number, since it is larger than the sum of its proper divisors (8534234).

16887742 is a wasteful number, since it uses less digits than its factorization.

16887742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30122.

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

The square root of 16887742 is about 4109.4697954846. The cubic root of 16887742 is about 256.5609343179.

The spelling of 16887742 in words is "sixteen million, eight hundred eighty-seven thousand, seven hundred forty-two".