28112708148 has 48 divisors (see below), whose sum is σ = 76196206464. Its totient is φ = 7900525440.

The previous prime is 28112708093. The next prime is 28112708149. The reversal of 28112708148 is 84180721182.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28112708149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2738115 + ... + 2748362.

It is an arithmetic number, because the mean of its divisors is an integer number (1587420968).

Almost surely, 2^28112708148 is an apocalyptic number.

28112708148 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28112708148 is an abundant number, since it is smaller than the sum of its proper divisors (48083498316).

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

28112708148 is a wasteful number, since it uses less digits than its factorization.

28112708148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486552 (or 5486550 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 42.

The spelling of 28112708148 in words is "twenty-eight billion, one hundred twelve million, seven hundred eight thousand, one hundred forty-eight".