87903128 has 16 divisors (see below), whose sum is σ = 166451760. Its totient is φ = 43516000.

The previous prime is 87903121. The next prime is 87903131. The reversal of 87903128 is 82130978.

It is a junction number, because it is equal to n+sod(n) for n = 87903091 and 87903100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87903121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53588 + ... + 55203.

It is an arithmetic number, because the mean of its divisors is an integer number (10403235).

Almost surely, 2^87903128 is an apocalyptic number.

It is an amenable number.

87903128 is a deficient number, since it is larger than the sum of its proper divisors (78548632).

87903128 is a wasteful number, since it uses less digits than its factorization.

87903128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108898 (or 108894 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 87903128 is about 9375.6668029533. Note that the first 3 decimals coincide. The cubic root of 87903128 is about 444.6327450066.

The spelling of 87903128 in words is "eighty-seven million, nine hundred three thousand, one hundred twenty-eight".