2815701228 has 72 divisors (see below), whose sum is σ = 7586298720. Its totient is φ = 877478400.

The previous prime is 2815701223. The next prime is 2815701241. The reversal of 2815701228 is 8221075182.

2815701228 is a `hidden beast` number, since 2 + 81 + 570 + 1 + 2 + 2 + 8 = 666.

2815701228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2815701192 and 2815701201.

It is not an unprimeable number, because it can be changed into a prime (2815701223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77178 + ... + 107646.

It is an arithmetic number, because the mean of its divisors is an integer number (105365260).

Almost surely, 2^2815701228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2815701228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3793149360).

2815701228 is an abundant number, since it is smaller than the sum of its proper divisors (4770597492).

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

2815701228 is a wasteful number, since it uses less digits than its factorization.

2815701228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30647 (or 30642 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 2815701228 is about 53063.1814726558. The cubic root of 2815701228 is about 1412.0893906390.

The spelling of 2815701228 in words is "two billion, eight hundred fifteen million, seven hundred one thousand, two hundred twenty-eight".