87539118 has 64 divisors (see below), whose sum is σ = 190813440. Its totient is φ = 26687232.

The previous prime is 87539107. The next prime is 87539119. The reversal of 87539118 is 81193578.

It is a self number, because there is not a number n which added to its sum of digits gives 87539118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87539119) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 557496 + ... + 557652.

It is an arithmetic number, because the mean of its divisors is an integer number (2981460).

Almost surely, 2^87539118 is an apocalyptic number.

87539118 is an abundant number, since it is smaller than the sum of its proper divisors (103274322).

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

87539118 is a wasteful number, since it uses less digits than its factorization.

87539118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its digits is 60480, while the sum is 42.

The square root of 87539118 is about 9356.2341783433. The cubic root of 87539118 is about 444.0181491648.

It can be divided in two parts, 8753 and 9118, that added together give a palindrome (17871).

The spelling of 87539118 in words is "eighty-seven million, five hundred thirty-nine thousand, one hundred eighteen".