4777728 has 36 divisors (see below), whose sum is σ = 12717768. Its totient is φ = 1592320.

The previous prime is 4777727. The next prime is 4777733. The reversal of 4777728 is 8277774.

It is a happy number.

4777728 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 4777728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4777723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2343 + ... + 3878.

Almost surely, 2^4777728 is an apocalyptic number.

4777728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4777728 is an abundant number, since it is smaller than the sum of its proper divisors (7940040).

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

4777728 is an equidigital number, since it uses as much as digits as its factorization.

4777728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6240 (or 6226 counting only the distinct ones).

The product of its digits is 153664, while the sum is 42.

The square root of 4777728 is about 2185.8014548444. The cubic root of 4777728 is about 168.4252266509.

The spelling of 4777728 in words is "four million, seven hundred seventy-seven thousand, seven hundred twenty-eight".