87134728 has 32 divisors (see below), whose sum is σ = 166289760. Its totient is φ = 42797440.

The previous prime is 87134711. The next prime is 87134731. The reversal of 87134728 is 82743178.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186351 + ... + 186817.

It is an arithmetic number, because the mean of its divisors is an integer number (5196555).

Almost surely, 2^87134728 is an apocalyptic number.

It is an amenable number.

87134728 is a deficient number, since it is larger than the sum of its proper divisors (79155032).

87134728 is a wasteful number, since it uses less digits than its factorization.

87134728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837 (or 833 counting only the distinct ones).

The product of its digits is 75264, while the sum is 40.

The square root of 87134728 is about 9334.5984380690. The cubic root of 87134728 is about 443.3333745391. Note that the first 4 decimals are identical.

The spelling of 87134728 in words is "eighty-seven million, one hundred thirty-four thousand, seven hundred twenty-eight".