87005224 has 16 divisors (see below), whose sum is σ = 166213620. Its totient is φ = 42681600.

The previous prime is 87005207. The next prime is 87005227. The reversal of 87005224 is 42250078.

It can be written as a sum of positive squares in 2 ways, for example, as 75377124 + 11628100 = 8682^2 + 3410^2 .

It is a junction number, because it is equal to n+sod(n) for n = 87005192 and 87005201.

It is not an unprimeable number, because it can be changed into a prime (87005227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102177 + ... + 103024.

Almost surely, 2^87005224 is an apocalyptic number.

It is an amenable number.

87005224 is a deficient number, since it is larger than the sum of its proper divisors (79208396).

87005224 is a wasteful number, since it uses less digits than its factorization.

87005224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205260 (or 205256 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 87005224 is about 9327.6590846793. The cubic root of 87005224 is about 443.1136308780.

It can be divided in two parts, 8700 and 5224, that added together give a square (13924 = 118²).

The spelling of 87005224 in words is "eighty-seven million, five thousand, two hundred twenty-four".