16989036 has 12 divisors (see below), whose sum is σ = 39641112. Its totient is φ = 5663008.

The previous prime is 16989013. The next prime is 16989079. The reversal of 16989036 is 63098961.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 707865 + ... + 707888.

It is an arithmetic number, because the mean of its divisors is an integer number (3303426).

Almost surely, 2^16989036 is an apocalyptic number.

It is an amenable number.

16989036 is an abundant number, since it is smaller than the sum of its proper divisors (22652076).

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

16989036 is a wasteful number, since it uses less digits than its factorization.

16989036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415760 (or 1415758 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 16989036 is about 4121.7758308768. The cubic root of 16989036 is about 257.0728696655.

The spelling of 16989036 in words is "sixteen million, nine hundred eighty-nine thousand, thirty-six".