87422500 has 135 divisors (see below), whose sum is σ = 223223077. Its totient is φ = 29920000.

The previous prime is 87422479. The next prime is 87422519. The reversal of 87422500 is 522478.

The square root of 87422500 is 9350.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 42693156 + 44729344 = 6534^2 + 6688^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 5142492 + ... + 5142508.

Almost surely, 2^87422500 is an apocalyptic number.

87422500 is the 9350-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87422500

87422500 is an abundant number, since it is smaller than the sum of its proper divisors (135800577).

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

87422500 is a wasteful number, since it uses less digits than its factorization.

87422500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 35 counting only the distinct ones).

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

The cubic root of 87422500 is about 443.8208906118.

Adding to 87422500 its reverse (522478), we get a palindrome (87944978).

The spelling of 87422500 in words is "eighty-seven million, four hundred twenty-two thousand, five hundred".