28726447876 has 48 divisors (see below), whose sum is σ = 58232788992. Its totient is φ = 12145104000.

The previous prime is 28726447831. The next prime is 28726447877. The reversal of 28726447876 is 67874462782.

It is a super-2 number, since 2×28726447876² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28726447877) 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, 765021 + ... + 801691.

It is an arithmetic number, because the mean of its divisors is an integer number (1213183104).

Almost surely, 2^28726447876 is an apocalyptic number.

It is an amenable number.

28726447876 is an abundant number, since it is smaller than the sum of its proper divisors (29506341116).

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

28726447876 is a wasteful number, since it uses less digits than its factorization.

28726447876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37060 (or 37058 counting only the distinct ones).

The product of its digits is 50577408, while the sum is 61.

The spelling of 28726447876 in words is "twenty-eight billion, seven hundred twenty-six million, four hundred forty-seven thousand, eight hundred seventy-six".