87489324 has 72 divisors (see below), whose sum is σ = 241611552. Its totient is φ = 26530560.

The previous prime is 87489323. The next prime is 87489329. The reversal of 87489324 is 42398478.

It is a self number, because there is not a number n which added to its sum of digits gives 87489324.

It is not an unprimeable number, because it can be changed into a prime (87489323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31912 + ... + 34544.

It is an arithmetic number, because the mean of its divisors is an integer number (3355716).

Almost surely, 2^87489324 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 87489324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120805776).

87489324 is an abundant number, since it is smaller than the sum of its proper divisors (154122228).

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

87489324 is a wasteful number, since it uses less digits than its factorization.

87489324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727 (or 2722 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 87489324 is about 9353.5727933234. The cubic root of 87489324 is about 443.9339443976.

The spelling of 87489324 in words is "eighty-seven million, four hundred eighty-nine thousand, three hundred twenty-four".