2869858728 has 256 divisors, whose sum is σ = 9179136000. Its totient is φ = 822700800.

The previous prime is 2869858727. The next prime is 2869858801. The reversal of 2869858728 is 8278589682.

2869858728 is a `hidden beast` number, since 28 + 6 + 9 + 8 + 587 + 28 = 666.

It is not an unprimeable number, because it can be changed into a prime (2869858721) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3461418 + ... + 3462246.

It is an arithmetic number, because the mean of its divisors is an integer number (35856000).

Almost surely, 2^2869858728 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 2869858728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4589568000).

2869858728 is an abundant number, since it is smaller than the sum of its proper divisors (6309277272).

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

2869858728 is a wasteful number, since it uses less digits than its factorization.

2869858728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 923 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 63.

The square root of 2869858728 is about 53571.0624124629. The cubic root of 2869858728 is about 1421.0853845446.

The spelling of 2869858728 in words is "two billion, eight hundred sixty-nine million, eight hundred fifty-eight thousand, seven hundred twenty-eight".