87000028 has 6 divisors (see below), whose sum is σ = 152250056. Its totient is φ = 43500012.

The previous prime is 86999989. The next prime is 87000037. The reversal of 87000028 is 82000078.

It is a junction number, because it is equal to n+sod(n) for n = 86999966 and 87000011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10875000 + ... + 10875007.

Almost surely, 2^87000028 is an apocalyptic number.

It is an amenable number.

87000028 is a deficient number, since it is larger than the sum of its proper divisors (65250028).

87000028 is a wasteful number, since it uses less digits than its factorization.

87000028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21750011 (or 21750009 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 87000028 is about 9327.3805540462. The cubic root of 87000028 is about 443.1048097055.

The spelling of 87000028 in words is "eighty-seven million, twenty-eight", and thus it is an aban number and an uban number.