980533440 has 168 divisors, whose sum is σ = 3386663280. Its totient is φ = 260388864.

The previous prime is 980533439. The next prime is 980533451. The reversal of 980533440 is 44335089.

980533440 is a `hidden beast` number, since 9 + 80 + 533 + 4 + 40 = 666.

It is a super-2 number, since 2×980533440² = 1922891653916467200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 980533395 and 980533404.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 883606 + ... + 884714.

It is an arithmetic number, because the mean of its divisors is an integer number (20158710).

Almost surely, 2^980533440 is an apocalyptic number.

980533440 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 980533440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1693331640).

980533440 is an abundant number, since it is smaller than the sum of its proper divisors (2406129840).

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

980533440 is a wasteful number, since it uses less digits than its factorization.

980533440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439 (or 1426 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 980533440 is about 31313.4705837600. The cubic root of 980533440 is about 993.4685800963.

The spelling of 980533440 in words is "nine hundred eighty million, five hundred thirty-three thousand, four hundred forty".