981322524 has 144 divisors (see below), whose sum is σ = 3096737280. Its totient is φ = 255104640.

The previous prime is 981322513. The next prime is 981322543. The reversal of 981322524 is 425223189.

It is a happy number.

It is a super-2 number, since 2×981322524² = 1925987792219461152, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (34560) is a multiple of the sum of its prime factors (4320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 230487 + ... + 234705.

It is an arithmetic number, because the mean of its divisors is an integer number (21505120).

Almost surely, 2^981322524 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 981322524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1548368640).

981322524 is an abundant number, since it is smaller than the sum of its proper divisors (2115414756).

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

981322524 is a wasteful number, since it uses less digits than its factorization.

981322524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4320 (or 4315 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 981322524 is about 31326.0678030295. The cubic root of 981322524 is about 993.7350064903.

The spelling of 981322524 in words is "nine hundred eighty-one million, three hundred twenty-two thousand, five hundred twenty-four".