28715744288730 has 32 divisors (see below), whose sum is σ = 68960354529600. Its totient is φ = 7652802006272.

The previous prime is 28715744288711. The next prime is 28715744288731. The reversal of 28715744288730 is 3788244751782.

It is a super-2 number, since 2×28715744288730² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28715744288731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 295563375 + ... + 295660514.

It is an arithmetic number, because the mean of its divisors is an integer number (2155011079050).

Almost surely, 2^{28715744288730} is an apocalyptic number.

28715744288730 is an abundant number, since it is smaller than the sum of its proper divisors (40244610240870).

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

28715744288730 is a wasteful number, since it uses less digits than its factorization.

28715744288730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591225518.

The product of its (nonzero) digits is 168591360, while the sum is 66.

The spelling of 28715744288730 in words is "twenty-eight trillion, seven hundred fifteen billion, seven hundred forty-four million, two hundred eighty-eight thousand, seven hundred thirty".