4055778 has 64 divisors (see below), whose sum is σ = 9792000. Its totient is φ = 1240272.

The previous prime is 4055773. The next prime is 4055791. The reversal of 4055778 is 8775504.

It is not an unprimeable number, because it can be changed into a prime (4055773) by changing a digit.

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, 60501 + ... + 60567.

It is an arithmetic number, because the mean of its divisors is an integer number (153000).

Almost surely, 2^4055778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4055778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4896000).

4055778 is an abundant number, since it is smaller than the sum of its proper divisors (5736222).

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

4055778 is a wasteful number, since it uses less digits than its factorization.

4055778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 4055778 is about 2013.8962237414. The cubic root of 4055778 is about 159.4745523353.

The spelling of 4055778 in words is "four million, fifty-five thousand, seven hundred seventy-eight".