981427488 has 48 divisors (see below), whose sum is σ = 2586336480. Its totient is φ = 325861376.

The previous prime is 981427477. The next prime is 981427523. The reversal of 981427488 is 884724189.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 981427488.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4783 + ... + 44561.

It is an arithmetic number, because the mean of its divisors is an integer number (53882010).

Almost surely, 2^981427488 is an apocalyptic number.

It is an amenable number.

981427488 is an abundant number, since it is smaller than the sum of its proper divisors (1604908992).

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

981427488 is a wasteful number, since it uses less digits than its factorization.

981427488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40049 (or 40041 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 51.

The square root of 981427488 is about 31327.7431041561. The cubic root of 981427488 is about 993.7704357808.

The spelling of 981427488 in words is "nine hundred eighty-one million, four hundred twenty-seven thousand, four hundred eighty-eight".