981324936 has 128 divisors (see below), whose sum is σ = 2786918400. Its totient is φ = 319878720.

The previous prime is 981324913. The next prime is 981324979. The reversal of 981324936 is 639423189.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 981324891 and 981324900.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2276641 + ... + 2277071.

It is an arithmetic number, because the mean of its divisors is an integer number (21772800).

Almost surely, 2^981324936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981324936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393459200).

981324936 is an abundant number, since it is smaller than the sum of its proper divisors (1805593464).

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

981324936 is a wasteful number, since it uses less digits than its factorization.

981324936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656 (or 646 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 981324936 is about 31326.1063012945. The cubic root of 981324936 is about 993.7358206592.

The spelling of 981324936 in words is "nine hundred eighty-one million, three hundred twenty-four thousand, nine hundred thirty-six".