2857555428 has 144 divisors (see below), whose sum is σ = 8337280896. Its totient is φ = 745804800.

The previous prime is 2857555423. The next prime is 2857555439. The reversal of 2857555428 is 8245557582.

It is a happy number.

2857555428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2857555423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1432800 + ... + 1434792.

It is an arithmetic number, because the mean of its divisors is an integer number (57897784).

Almost surely, 2^2857555428 is an apocalyptic number.

2857555428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2857555428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4168640448).

2857555428 is an abundant number, since it is smaller than the sum of its proper divisors (5479725468).

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

2857555428 is a wasteful number, since it uses less digits than its factorization.

2857555428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 2119 counting only the distinct ones).

The product of its digits is 4480000, while the sum is 51.

The square root of 2857555428 is about 53456.1074901643. The cubic root of 2857555428 is about 1419.0517089901.

The spelling of 2857555428 in words is "two billion, eight hundred fifty-seven million, five hundred fifty-five thousand, four hundred twenty-eight".