16989696 has 80 divisors (see below), whose sum is σ = 50331600. Its totient is φ = 5658624.

The previous prime is 16989691. The next prime is 16989719. The reversal of 16989696 is 69698961.

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

It is a nude number because it is divisible by every one of its digits.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16989691) 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, 13210 + ... + 14438.

It is an arithmetic number, because the mean of its divisors is an integer number (629145).

Almost surely, 2^16989696 is an apocalyptic number.

16989696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16989696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25165800).

16989696 is an abundant number, since it is smaller than the sum of its proper divisors (33341904).

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

16989696 is an equidigital number, since it uses as much as digits as its factorization.

16989696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256 (or 1234 counting only the distinct ones).

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

The square root of 16989696 is about 4121.8558926775. The cubic root of 16989696 is about 257.0761985948.

The spelling of 16989696 in words is "sixteen million, nine hundred eighty-nine thousand, six hundred ninety-six".