16996986 has 64 divisors (see below), whose sum is σ = 39836160. Its totient is φ = 5365440.

The previous prime is 16996981. The next prime is 16996999. The reversal of 16996986 is 68969961.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (16996981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93816 + ... + 93996.

It is an arithmetic number, because the mean of its divisors is an integer number (622440).

Almost surely, 2^16996986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16996986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19918080).

16996986 is an abundant number, since it is smaller than the sum of its proper divisors (22839174).

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

16996986 is a wasteful number, since it uses less digits than its factorization.

16996986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276 (or 270 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 16996986 is about 4122.7401082290. The cubic root of 16996986 is about 257.1129623977.

The spelling of 16996986 in words is "sixteen million, nine hundred ninety-six thousand, nine hundred eighty-six".