2016989400 has 96 divisors (see below), whose sum is σ = 6355285200. Its totient is φ = 529036800.

The previous prime is 2016989389. The next prime is 2016989413. The reversal of 2016989400 is 49896102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9046 + ... + 64154.

Almost surely, 2^2016989400 is an apocalyptic number.

2016989400 is a gapful number since it is divisible by the number (20) 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 2016989400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3177642600).

2016989400 is an abundant number, since it is smaller than the sum of its proper divisors (4338295800).

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

2016989400 is a wasteful number, since it uses less digits than its factorization.

2016989400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55189 (or 55180 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 2016989400 is about 44910.9051344993. The cubic root of 2016989400 is about 1263.4785459901.

The spelling of 2016989400 in words is "two billion, sixteen million, nine hundred eighty-nine thousand, four hundred".