2016003780 has 144 divisors (see below), whose sum is σ = 7214398464. Its totient is φ = 445927680.

The previous prime is 2016003779. The next prime is 2016003791. The reversal of 2016003780 is 873006102.

2016003780 is a `hidden beast` number, since 20 + 1 + 600 + 37 + 8 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13254 + ... + 64866.

Almost surely, 2^2016003780 is an apocalyptic number.

2016003780 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 2016003780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3607199232).

2016003780 is an abundant number, since it is smaller than the sum of its proper divisors (5198394684).

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

2016003780 is a wasteful number, since it uses less digits than its factorization.

2016003780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51666 (or 51661 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2016003780 is about 44899.9307349132. The cubic root of 2016003780 is about 1263.2727090757.

Adding to 2016003780 its reverse (873006102), we get a palindrome (2889009882).

The spelling of 2016003780 in words is "two billion, sixteen million, three thousand, seven hundred eighty".