87136424 has 32 divisors (see below), whose sum is σ = 173638080. Its totient is φ = 40852224.

The previous prime is 87136421. The next prime is 87136433. The reversal of 87136424 is 42463178.

It is not an unprimeable number, because it can be changed into a prime (87136421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40709 + ... + 42795.

It is an arithmetic number, because the mean of its divisors is an integer number (5426190).

Almost surely, 2^87136424 is an apocalyptic number.

It is an amenable number.

87136424 is a deficient number, since it is larger than the sum of its proper divisors (86501656).

87136424 is a wasteful number, since it uses less digits than its factorization.

87136424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417 (or 2413 counting only the distinct ones).

The product of its digits is 32256, while the sum is 35.

The square root of 87136424 is about 9334.6892824561. The cubic root of 87136424 is about 443.3362508837.

The spelling of 87136424 in words is "eighty-seven million, one hundred thirty-six thousand, four hundred twenty-four".