28131757116 has 48 divisors (see below), whose sum is σ = 67979197440. Its totient is φ = 9045164160.

The previous prime is 28131757103. The next prime is 28131757117. The reversal of 28131757116 is 61175713182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28131757117) 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, 8961 + ... + 237368.

It is an arithmetic number, because the mean of its divisors is an integer number (1416233280).

Almost surely, 2^28131757116 is an apocalyptic number.

It is an amenable number.

28131757116 is an abundant number, since it is smaller than the sum of its proper divisors (39847440324).

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

28131757116 is a wasteful number, since it uses less digits than its factorization.

28131757116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246674 (or 246672 counting only the distinct ones).

The product of its digits is 70560, while the sum is 42.

The spelling of 28131757116 in words is "twenty-eight billion, one hundred thirty-one million, seven hundred fifty-seven thousand, one hundred sixteen".