87481320 has 256 divisors, whose sum is σ = 305337600. Its totient is φ = 19906560.

The previous prime is 87481319. The next prime is 87481333. The reversal of 87481320 is 2318478.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1434090 + ... + 1434150.

It is an arithmetic number, because the mean of its divisors is an integer number (1192725).

Almost surely, 2^87481320 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 87481320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152668800).

87481320 is an abundant number, since it is smaller than the sum of its proper divisors (217856280).

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

87481320 is a wasteful number, since it uses less digits than its factorization.

87481320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 87481320 is about 9353.1449256386. The cubic root of 87481320 is about 443.9204061528.

Adding to 87481320 its reverse (2318478), we get a palindrome (89799798).

The spelling of 87481320 in words is "eighty-seven million, four hundred eighty-one thousand, three hundred twenty".