981320 has 16 divisors (see below), whose sum is σ = 2208060. Its totient is φ = 392512.

The previous prime is 981319. The next prime is 981373. The reversal of 981320 is 23189.

It can be written as a sum of positive squares in 2 ways, for example, as 835396 + 145924 = 914^2 + 382^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 981320.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12227 + ... + 12306.

2⁹⁸¹³²⁰ is an apocalyptic number.

It is an amenable number.

981320 is an abundant number, since it is smaller than the sum of its proper divisors (1226740).

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

981320 is a wasteful number, since it uses less digits than its factorization.

981320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24544 (or 24540 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 981320 is about 990.6159699904. The cubic root of 981320 is about 99.3734154514.

The spelling of 981320 in words is "nine hundred eighty-one thousand, three hundred twenty".