28112317148 has 24 divisors (see below), whose sum is σ = 49892094000. Its totient is φ = 13858339968.

The previous prime is 28112317127. The next prime is 28112317153. The reversal of 28112317148 is 84171321182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11111 + ... + 237377.

It is an arithmetic number, because the mean of its divisors is an integer number (2078837250).

Almost surely, 2^28112317148 is an apocalyptic number.

It is an amenable number.

28112317148 is a deficient number, since it is larger than the sum of its proper divisors (21779776852).

28112317148 is a wasteful number, since it uses less digits than its factorization.

28112317148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226709 (or 226707 counting only the distinct ones).

The product of its digits is 21504, while the sum is 38.

The spelling of 28112317148 in words is "twenty-eight billion, one hundred twelve million, three hundred seventeen thousand, one hundred forty-eight".