4000027780 has 36 divisors (see below), whose sum is σ = 9771498828. Its totient is φ = 1371437760.

The previous prime is 4000027747. The next prime is 4000027841. The reversal of 4000027780 is 877200004.

4000027780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2629843524 + 1370184256 = 51282^2 + 37016^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2039851 + ... + 2041810.

It is an arithmetic number, because the mean of its divisors is an integer number (271430523).

Almost surely, 2^4000027780 is an apocalyptic number.

It is an amenable number.

4000027780 is an abundant number, since it is smaller than the sum of its proper divisors (5771471048).

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

4000027780 is a wasteful number, since it uses less digits than its factorization.

4000027780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081684 (or 4081675 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 4000027780 is about 63245.7728231698. The cubic root of 4000027780 is about 1587.4047267931.

Adding to 4000027780 its reverse (877200004), we get a palindrome (4877227784).

The spelling of 4000027780 in words is "four billion, twenty-seven thousand, seven hundred eighty".