4006778880 has 384 divisors, whose sum is σ = 14089420800. Its totient is φ = 966131712.

The previous prime is 4006778837. The next prime is 4006778911. The reversal of 4006778880 is 888776004.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31549377 + ... + 31549503.

It is an arithmetic number, because the mean of its divisors is an integer number (36691200).

Almost surely, 2^4006778880 is an apocalyptic number.

4006778880 is a gapful number since it is divisible by the number (40) 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 4006778880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7044710400).

4006778880 is an abundant number, since it is smaller than the sum of its proper divisors (10082641920).

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

4006778880 is a wasteful number, since it uses less digits than its factorization.

4006778880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 4006778880 is about 63299.1222687961. The cubic root of 4006778880 is about 1588.2972793108.

The spelling of 4006778880 in words is "four billion, six million, seven hundred seventy-eight thousand, eight hundred eighty".