28729007112 has 32 divisors (see below), whose sum is σ = 77347327680. Its totient is φ = 8839694400.

The previous prime is 28729007089. The next prime is 28729007119. The reversal of 28729007112 is 21170092782.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (28729007119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46039764 + ... + 46040387.

It is an arithmetic number, because the mean of its divisors is an integer number (2417103990).

Almost surely, 2^28729007112 is an apocalyptic number.

It is an amenable number.

28729007112 is an abundant number, since it is smaller than the sum of its proper divisors (48618320568).

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

28729007112 is a wasteful number, since it uses less digits than its factorization.

28729007112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92080173 (or 92080169 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 39.

Adding to 28729007112 its reverse (21170092782), we get a palindrome (49899099894).

The spelling of 28729007112 in words is "twenty-eight billion, seven hundred twenty-nine million, seven thousand, one hundred twelve".