989732562 has 64 divisors (see below), whose sum is σ = 2460057600. Its totient is φ = 258479424.

The previous prime is 989732551. The next prime is 989732563. The reversal of 989732562 is 265237989.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (989732563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47439 + ... + 65037.

It is an arithmetic number, because the mean of its divisors is an integer number (38438400).

Almost surely, 2^989732562 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989732562, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1230028800).

989732562 is an abundant number, since it is smaller than the sum of its proper divisors (1470325038).

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

989732562 is a wasteful number, since it uses less digits than its factorization.

989732562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17727.

The product of its digits is 1632960, while the sum is 51.

The square root of 989732562 is about 31460.0152892525. The cubic root of 989732562 is about 996.5657400265.

The spelling of 989732562 in words is "nine hundred eighty-nine million, seven hundred thirty-two thousand, five hundred sixty-two".