87197180 has 48 divisors (see below), whose sum is σ = 211463616. Its totient is φ = 29583360.

The previous prime is 87197161. The next prime is 87197183. The reversal of 87197180 is 8179178.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87197183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10370 + ... + 16790.

It is an arithmetic number, because the mean of its divisors is an integer number (4405492).

Almost surely, 2^87197180 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 87197180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105731808).

87197180 is an abundant number, since it is smaller than the sum of its proper divisors (124266436).

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

87197180 is a wasteful number, since it uses less digits than its factorization.

87197180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6534 (or 6532 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 41.

The square root of 87197180 is about 9337.9430283120. The cubic root of 87197180 is about 443.4392658963.

The spelling of 87197180 in words is "eighty-seven million, one hundred ninety-seven thousand, one hundred eighty".