4778442 has 24 divisors (see below), whose sum is σ = 10501920. Its totient is φ = 1569960.

The previous prime is 4778441. The next prime is 4778453. The reversal of 4778442 is 2448774.

It is a junction number, because it is equal to n+sod(n) for n = 4778397 and 4778406.

It is not an unprimeable number, because it can be changed into a prime (4778441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 592 + ... + 3147.

It is an arithmetic number, because the mean of its divisors is an integer number (437580).

Almost surely, 2^4778442 is an apocalyptic number.

4778442 is an abundant number, since it is smaller than the sum of its proper divisors (5723478).

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

4778442 is a wasteful number, since it uses less digits than its factorization.

4778442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3818 (or 3815 counting only the distinct ones).

The product of its digits is 50176, while the sum is 36.

The square root of 4778442 is about 2185.9647755625. The cubic root of 4778442 is about 168.4336162468.

The spelling of 4778442 in words is "four million, seven hundred seventy-eight thousand, four hundred forty-two".