28888588730 has 8 divisors (see below), whose sum is σ = 51999459732. Its totient is φ = 11555435488.

The previous prime is 28888588721. The next prime is 28888588739. The reversal of 28888588730 is 3788588882.

It is an interprime number because it is at equal distance from previous prime (28888588721) and next prime (28888588739).

It can be written as a sum of positive squares in 2 ways, for example, as 25347505681 + 3541083049 = 159209^2 + 59507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28888588730² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28888588739) 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, 1444429427 + ... + 1444429446.

Almost surely, 2^28888588730 is an apocalyptic number.

28888588730 is a deficient number, since it is larger than the sum of its proper divisors (23110871002).

28888588730 is a wasteful number, since it uses less digits than its factorization.

28888588730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888858880.

The product of its (nonzero) digits is 55050240, while the sum is 65.

The spelling of 28888588730 in words is "twenty-eight billion, eight hundred eighty-eight million, five hundred eighty-eight thousand, seven hundred thirty".