981508 has 12 divisors (see below), whose sum is σ = 1873872. Its totient is φ = 446120.

The previous prime is 981493. The next prime is 981517. The reversal of 981508 is 805189.

981508 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 981508.

It is an unprimeable number.

981508 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11110 + ... + 11197.

It is an arithmetic number, because the mean of its divisors is an integer number (156156).

2⁹⁸¹⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

981508 is a deficient number, since it is larger than the sum of its proper divisors (892364).

981508 is a wasteful number, since it uses less digits than its factorization.

981508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22322 (or 22320 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 981508 is about 990.7108559010. The cubic root of 981508 is about 99.3797609892.

The spelling of 981508 in words is "nine hundred eighty-one thousand, five hundred eight".