16984140 has 96 divisors (see below), whose sum is σ = 50561280. Its totient is φ = 4252416.

The previous prime is 16984133. The next prime is 16984141. The reversal of 16984140 is 4148961.

It is a super-2 number, since 2×16984140² = 576922023079200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16984141) 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, 74707 + ... + 74933.

It is an arithmetic number, because the mean of its divisors is an integer number (526680).

Almost surely, 2^16984140 is an apocalyptic number.

16984140 is a gapful number since it is divisible by the number (10) 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 16984140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25280640).

16984140 is an abundant number, since it is smaller than the sum of its proper divisors (33577140).

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

16984140 is a wasteful number, since it uses less digits than its factorization.

16984140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 16984140 is about 4121.1818693186. The cubic root of 16984140 is about 257.0481723706.

The spelling of 16984140 in words is "sixteen million, nine hundred eighty-four thousand, one hundred forty".