87530128 has 20 divisors (see below), whose sum is σ = 193816960. Its totient is φ = 37512864.

The previous prime is 87530119. The next prime is 87530129. The reversal of 87530128 is 82103578.

It is a junction number, because it is equal to n+sod(n) for n = 87530093 and 87530102.

It is not an unprimeable number, because it can be changed into a prime (87530129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390648 + ... + 390871.

It is an arithmetic number, because the mean of its divisors is an integer number (9690848).

Almost surely, 2^87530128 is an apocalyptic number.

It is an amenable number.

87530128 is an abundant number, since it is smaller than the sum of its proper divisors (106286832).

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

87530128 is a wasteful number, since it uses less digits than its factorization.

87530128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781534 (or 781528 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 87530128 is about 9355.7537376739. The cubic root of 87530128 is about 444.0029488753.

The spelling of 87530128 in words is "eighty-seven million, five hundred thirty thousand, one hundred twenty-eight".