981380 has 12 divisors (see below), whose sum is σ = 2060940. Its totient is φ = 392544.

The previous prime is 981377. The next prime is 981391. The reversal of 981380 is 83189.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 123904 + 857476 = 352^2 + 926^2 .

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, 24515 + ... + 24554.

It is an arithmetic number, because the mean of its divisors is an integer number (171745).

2⁹⁸¹³⁸⁰ is an apocalyptic number.

It is an amenable number.

981380 is an abundant number, since it is smaller than the sum of its proper divisors (1079560).

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

981380 is a wasteful number, since it uses less digits than its factorization.

981380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49078 (or 49076 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 981380 is about 990.6462537152. The cubic root of 981380 is about 99.3754407111.

The spelling of 981380 in words is "nine hundred eighty-one thousand, three hundred eighty".