4778312 has 32 divisors (see below), whose sum is σ = 11171520. Its totient is φ = 1861440.

The previous prime is 4778311. The next prime is 4778339. The reversal of 4778312 is 2138774.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (4778311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3263 + ... + 4494.

It is an arithmetic number, because the mean of its divisors is an integer number (349110).

Almost surely, 2^4778312 is an apocalyptic number.

It is an amenable number.

4778312 is an abundant number, since it is smaller than the sum of its proper divisors (6393208).

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

4778312 is a wasteful number, since it uses less digits than its factorization.

4778312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7781 (or 7777 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 4778312 is about 2185.9350402059. The cubic root of 4778312 is about 168.4320887916.

The spelling of 4778312 in words is "four million, seven hundred seventy-eight thousand, three hundred twelve".