1040989320 has 480 divisors, whose sum is σ = 4171305600. Its totient is φ = 232098048.

The previous prime is 1040989259. The next prime is 1040989343. The reversal of 1040989320 is 239890401.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 12541999 + ... + 12542081.

It is an arithmetic number, because the mean of its divisors is an integer number (8690220).

Almost surely, 2^1040989320 is an apocalyptic number.

1040989320 is a gapful number since it is divisible by the number (10) 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 1040989320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085652800).

1040989320 is an abundant number, since it is smaller than the sum of its proper divisors (3130316280).

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

1040989320 is a wasteful number, since it uses less digits than its factorization.

1040989320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1040989320 is about 32264.3661025596. The cubic root of 1040989320 is about 1013.4805644605.

The spelling of 1040989320 in words is "one billion, forty million, nine hundred eighty-nine thousand, three hundred twenty".