87461540 has 24 divisors (see below), whose sum is σ = 189595392. Its totient is φ = 33855840.

The previous prime is 87461533. The next prime is 87461557. The reversal of 87461540 is 4516478.

It is a self number, because there is not a number n which added to its sum of digits gives 87461540.

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, 69914 + ... + 71153.

It is an arithmetic number, because the mean of its divisors is an integer number (7899808).

Almost surely, 2^87461540 is an apocalyptic number.

It is an amenable number.

87461540 is an abundant number, since it is smaller than the sum of its proper divisors (102133852).

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

87461540 is a wasteful number, since it uses less digits than its factorization.

87461540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141107 (or 141105 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 87461540 is about 9352.0874675123. The cubic root of 87461540 is about 443.8869460286.

The spelling of 87461540 in words is "eighty-seven million, four hundred sixty-one thousand, five hundred forty".