16999968 has 48 divisors (see below), whose sum is σ = 45372096. Its totient is φ = 5571840.

The previous prime is 16999963. The next prime is 16999999. The reversal of 16999968 is 86999961.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (16999963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4405 + ... + 7307.

It is an arithmetic number, because the mean of its divisors is an integer number (945252).

Almost surely, 2^16999968 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 16999968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22686048).

16999968 is an abundant number, since it is smaller than the sum of its proper divisors (28372128).

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

16999968 is a wasteful number, since it uses less digits than its factorization.

16999968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977 (or 2969 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 57.

The square root of 16999968 is about 4123.1017450458. The cubic root of 16999968 is about 257.1279977304.

The spelling of 16999968 in words is "sixteen million, nine hundred ninety-nine thousand, nine hundred sixty-eight".