981340 has 24 divisors (see below), whose sum is σ = 2081520. Its totient is φ = 388608.

The previous prime is 981319. The next prime is 981373. The reversal of 981340 is 43189.

It is a congruent number.

It is an unprimeable number.

981340 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2604 + ... + 2956.

It is an arithmetic number, because the mean of its divisors is an integer number (86730).

2⁹⁸¹³⁴⁰ is an apocalyptic number.

It is an amenable number.

981340 is an abundant number, since it is smaller than the sum of its proper divisors (1100180).

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

981340 is a wasteful number, since it uses less digits than its factorization.

981340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 981340 is about 990.6260646682. The cubic root of 981340 is about 99.3740905472.

The spelling of 981340 in words is "nine hundred eighty-one thousand, three hundred forty".