16749887 has 24 divisors (see below), whose sum is σ = 22189440. Its totient is φ = 12249360.

The previous prime is 16749883. The next prime is 16749893. The reversal of 16749887 is 78894761.

It is not a de Polignac number, because 16749887 - 2² = 16749883 is a prime.

Its product of digits (677376) is a multiple of the sum of its prime divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16749881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 156488 + ... + 156594.

It is an arithmetic number, because the mean of its divisors is an integer number (924560).

Almost surely, 2^16749887 is an apocalyptic number.

16749887 is a deficient number, since it is larger than the sum of its proper divisors (5439553).

16749887 is a wasteful number, since it uses less digits than its factorization.

16749887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 144 counting only the distinct ones).

The product of its digits is 677376, while the sum is 50.

The square root of 16749887 is about 4092.6625807657. The cubic root of 16749887 is about 255.8609219742.

The spelling of 16749887 in words is "sixteen million, seven hundred forty-nine thousand, eight hundred eighty-seven".