102728437108 has 18 divisors (see below), whose sum is σ = 197603668178. Its totient is φ = 46694743920.

The previous prime is 102728437073. The next prime is 102728437121. The reversal of 102728437108 is 801734827201.

It can be written as a sum of positive squares in only one way, i.e., 77316251364 + 25412185744 = 278058^2 + 159412^2 .

It is a super-2 number, since 2×102728437108² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106123935 + ... + 106124902.

Almost surely, 2^102728437108 is an apocalyptic number.

It is an amenable number.

102728437108 is a deficient number, since it is larger than the sum of its proper divisors (94875231070).

102728437108 is a wasteful number, since it uses less digits than its factorization.

102728437108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212248863 (or 212248850 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 102728437108 in words is "one hundred two billion, seven hundred twenty-eight million, four hundred thirty-seven thousand, one hundred eight".