28253147212 has 96 divisors (see below), whose sum is σ = 55988513280. Its totient is φ = 12395566080.

The previous prime is 28253147183. The next prime is 28253147243. The reversal of 28253147212 is 21274135282.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52223662 + ... + 52224202.

It is an arithmetic number, because the mean of its divisors is an integer number (583213680).

Almost surely, 2^28253147212 is an apocalyptic number.

It is an amenable number.

28253147212 is a deficient number, since it is larger than the sum of its proper divisors (27735366068).

28253147212 is a wasteful number, since it uses less digits than its factorization.

28253147212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151 (or 1149 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The spelling of 28253147212 in words is "twenty-eight billion, two hundred fifty-three million, one hundred forty-seven thousand, two hundred twelve".