87004040 has 32 divisors (see below), whose sum is σ = 206064000. Its totient is φ = 32969664.

The previous prime is 87004019. The next prime is 87004051. The reversal of 87004040 is 4040078.

It is a junction number, because it is equal to n+sod(n) for n = 87003997 and 87004015.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56480 + ... + 57999.

It is an arithmetic number, because the mean of its divisors is an integer number (6439500).

Almost surely, 2^87004040 is an apocalyptic number.

It is an amenable number.

87004040 is an abundant number, since it is smaller than the sum of its proper divisors (119059960).

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

87004040 is a wasteful number, since it uses less digits than its factorization.

87004040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114509 (or 114505 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 87004040 is about 9327.5956173067. The cubic root of 87004040 is about 443.1116208496. Note that the first 3 decimals are identical.

The spelling of 87004040 in words is "eighty-seven million, four thousand, forty".