4778456 has 8 divisors (see below), whose sum is σ = 8959620. Its totient is φ = 2389224.

The previous prime is 4778453. The next prime is 4778467. The reversal of 4778456 is 6548774.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778453) 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 as a sum of consecutive naturals, namely, 298646 + ... + 298661.

Almost surely, 2^4778456 is an apocalyptic number.

It is an amenable number.

4778456 is a deficient number, since it is larger than the sum of its proper divisors (4181164).

4778456 is a wasteful number, since it uses less digits than its factorization.

4778456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597313 (or 597309 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 4778456 is about 2185.9679778075. The cubic root of 4778456 is about 168.4337807404.

The spelling of 4778456 in words is "four million, seven hundred seventy-eight thousand, four hundred fifty-six".