981148256 has 48 divisors (see below), whose sum is σ = 2118085200. Its totient is φ = 443681280.

The previous prime is 981148249. The next prime is 981148261. The reversal of 981148256 is 652841189.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

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, 62270 + ... + 76418.

It is an arithmetic number, because the mean of its divisors is an integer number (44126775).

Almost surely, 2^981148256 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 981148256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1059042600).

981148256 is an abundant number, since it is smaller than the sum of its proper divisors (1136936944).

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

981148256 is a wasteful number, since it uses less digits than its factorization.

981148256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14367 (or 14359 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 981148256 is about 31323.2861622148. The cubic root of 981148256 is about 993.6761789183.

The spelling of 981148256 in words is "nine hundred eighty-one million, one hundred forty-eight thousand, two hundred fifty-six".