981912740 has 48 divisors (see below), whose sum is σ = 2182783680. Its totient is φ = 370392960.

The previous prime is 981912721. The next prime is 981912781. The reversal of 981912740 is 47219189.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5255 + ... + 44625.

It is an arithmetic number, because the mean of its divisors is an integer number (45474660).

Almost surely, 2^981912740 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 981912740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1091391840).

981912740 is an abundant number, since it is smaller than the sum of its proper divisors (1200870940).

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

981912740 is a wasteful number, since it uses less digits than its factorization.

981912740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39452 (or 39450 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 981912740 is about 31335.4869118066. The cubic root of 981912740 is about 993.9341937226.

The spelling of 981912740 in words is "nine hundred eighty-one million, nine hundred twelve thousand, seven hundred forty".