1005415320 has 256 divisors, whose sum is σ = 3790080000. Its totient is φ = 212018688.

The previous prime is 1005415273. The next prime is 1005415321. The reversal of 1005415320 is 235145001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005415321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 534141 + ... + 536019.

It is an arithmetic number, because the mean of its divisors is an integer number (14805000).

Almost surely, 2^1005415320 is an apocalyptic number.

1005415320 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 1005415320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1895040000).

1005415320 is an abundant number, since it is smaller than the sum of its proper divisors (2784664680).

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

1005415320 is a wasteful number, since it uses less digits than its factorization.

1005415320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927 (or 1909 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1005415320 is about 31708.2847218199. The cubic root of 1005415320 is about 1001.8018580243.

The spelling of 1005415320 in words is "one billion, five million, four hundred fifteen thousand, three hundred twenty".