87480220 has 24 divisors (see below), whose sum is σ = 183909600. Its totient is φ = 34953792.

The previous prime is 87480203. The next prime is 87480221. The reversal of 87480220 is 2208478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87480221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22801 + ... + 26359.

It is an arithmetic number, because the mean of its divisors is an integer number (7662900).

Almost surely, 2^87480220 is an apocalyptic number.

It is an amenable number.

87480220 is an abundant number, since it is smaller than the sum of its proper divisors (96429380).

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

87480220 is a wasteful number, since it uses less digits than its factorization.

87480220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797 (or 4795 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 87480220 is about 9353.0861217034. The cubic root of 87480220 is about 443.9185455099.

Adding to 87480220 its reverse (2208478), we get a palindrome (89688698).

The spelling of 87480220 in words is "eighty-seven million, four hundred eighty thousand, two hundred twenty".