981120588 has 48 divisors (see below), whose sum is σ = 2618246400. Its totient is φ = 280113984.

The previous prime is 981120487. The next prime is 981120589. The reversal of 981120588 is 885021189.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (981120589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138763 + ... + 145661.

It is an arithmetic number, because the mean of its divisors is an integer number (54546800).

Almost surely, 2^981120588 is an apocalyptic number.

It is an amenable number.

981120588 is an abundant number, since it is smaller than the sum of its proper divisors (1637125812).

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

981120588 is a wasteful number, since it uses less digits than its factorization.

981120588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606 (or 8604 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 42.

The square root of 981120588 is about 31322.8445068452. The cubic root of 981120588 is about 993.6668384030. Note that the first 3 decimals are identical.

The spelling of 981120588 in words is "nine hundred eighty-one million, one hundred twenty thousand, five hundred eighty-eight".