981489232 has 80 divisors (see below), whose sum is σ = 2086473600. Its totient is φ = 445616640.

The previous prime is 981489221. The next prime is 981489259. The reversal of 981489232 is 232984189.

It is a super-2 number, since 2×981489232² = 1926642225063899648, which contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 797994 + ... + 799222.

It is an arithmetic number, because the mean of its divisors is an integer number (26080920).

Almost surely, 2^981489232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981489232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1043236800).

981489232 is an abundant number, since it is smaller than the sum of its proper divisors (1104984368).

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

981489232 is a wasteful number, since it uses less digits than its factorization.

981489232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364 (or 1358 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 981489232 is about 31328.7285410691. The cubic root of 981489232 is about 993.7912755188.

The spelling of 981489232 in words is "nine hundred eighty-one million, four hundred eighty-nine thousand, two hundred thirty-two".