87543138 has 32 divisors (see below), whose sum is σ = 180760320. Its totient is φ = 28250640.

The previous prime is 87543107. The next prime is 87543151. The reversal of 87543138 is 83134578.

It is a junction number, because it is equal to n+sod(n) for n = 87543096 and 87543105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21873 + ... + 25563.

It is an arithmetic number, because the mean of its divisors is an integer number (5648760).

Almost surely, 2^87543138 is an apocalyptic number.

87543138 is an abundant number, since it is smaller than the sum of its proper divisors (93217182).

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

87543138 is a wasteful number, since it uses less digits than its factorization.

87543138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3822.

The product of its digits is 80640, while the sum is 39.

The square root of 87543138 is about 9356.4490058996. The cubic root of 87543138 is about 444.0249458430.

The spelling of 87543138 in words is "eighty-seven million, five hundred forty-three thousand, one hundred thirty-eight".