4778418 has 16 divisors (see below), whose sum is σ = 9779616. Its totient is φ = 1555680.

The previous prime is 4778413. The next prime is 4778429. The reversal of 4778418 is 8148774.

It is not an unprimeable number, because it can be changed into a prime (4778413) 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 7 ways as a sum of consecutive naturals, for example, 9003 + ... + 9518.

It is an arithmetic number, because the mean of its divisors is an integer number (611226).

Almost surely, 2^4778418 is an apocalyptic number.

4778418 is an abundant number, since it is smaller than the sum of its proper divisors (5001198).

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

4778418 is a wasteful number, since it uses less digits than its factorization.

4778418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18569.

The product of its digits is 50176, while the sum is 39.

The square root of 4778418 is about 2185.9592859886. The cubic root of 4778418 is about 168.4333342572.

The spelling of 4778418 in words is "four million, seven hundred seventy-eight thousand, four hundred eighteen".