87539380 has 48 divisors (see below), whose sum is σ = 195955200. Its totient is φ = 32772608.

The previous prime is 87539369. The next prime is 87539401. The reversal of 87539380 is 8393578.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19596 + ... + 23644.

It is an arithmetic number, because the mean of its divisors is an integer number (4082400).

Almost surely, 2^87539380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87539380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97977600).

87539380 is an abundant number, since it is smaller than the sum of its proper divisors (108415820).

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

87539380 is a wasteful number, since it uses less digits than its factorization.

87539380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 87539380 is about 9356.2481796925. The cubic root of 87539380 is about 444.0185921387.

The spelling of 87539380 in words is "eighty-seven million, five hundred thirty-nine thousand, three hundred eighty".