87428128100 has 18 divisors (see below), whose sum is σ = 189719038194. Its totient is φ = 34971251200.

The previous prime is 87428128087. The next prime is 87428128147. The reversal of 87428128100 is 182182478.

It can be written as a sum of positive squares in 3 ways, for example, as 294534244 + 87133593856 = 17162^2 + 295184^2 .

It is a super-2 number, since 2×87428128100² (a number of 23 digits) contains 22 as substring.

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, 437140541 + ... + 437140740.

Almost surely, 2^87428128100 is an apocalyptic number.

It is an amenable number.

87428128100 is an abundant number, since it is smaller than the sum of its proper divisors (102290910094).

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

87428128100 is a wasteful number, since it uses less digits than its factorization.

87428128100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874281295 (or 874281288 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 41.

The spelling of 87428128100 in words is "eighty-seven billion, four hundred twenty-eight million, one hundred twenty-eight thousand, one hundred".