87198244 has 81 divisors (see below), whose sum is σ = 192183537. Its totient is φ = 34513248.

The previous prime is 87198229. The next prime is 87198269. The reversal of 87198244 is 44289178.

The square root of 87198244 is 9338.

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

It can be written as a sum of positive squares in only one way, i.e., 45724644 + 41473600 = 6762^2 + 6440^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 87198244.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3006822 + ... + 3006850.

Almost surely, 2^87198244 is an apocalyptic number.

87198244 is the 9338-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 87198244

87198244 is an abundant number, since it is smaller than the sum of its proper divisors (104985293).

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

87198244 is a wasteful number, since it uses less digits than its factorization.

87198244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 61 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The cubic root of 87198244 is about 443.4410695382.

The spelling of 87198244 in words is "eighty-seven million, one hundred ninety-eight thousand, two hundred forty-four".