16897748 has 36 divisors (see below), whose sum is σ = 34899732. Its totient is φ = 7136640.

The previous prime is 16897747. The next prime is 16897799. The reversal of 16897748 is 84779861.

It can be written as a sum of positive squares in 2 ways, for example, as 12945604 + 3952144 = 3598^2 + 1988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16897696 and 16897705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16897747) 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 11 ways as a sum of consecutive naturals, for example, 13718 + ... + 14898.

It is an arithmetic number, because the mean of its divisors is an integer number (969437).

Almost surely, 2^16897748 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16897748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17449866).

16897748 is an abundant number, since it is smaller than the sum of its proper divisors (18001984).

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

16897748 is a wasteful number, since it uses less digits than its factorization.

16897748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1263 counting only the distinct ones).

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

The square root of 16897748 is about 4110.6870471978. The cubic root of 16897748 is about 256.6115951633.

The spelling of 16897748 in words is "sixteen million, eight hundred ninety-seven thousand, seven hundred forty-eight".