1145004320 has 24 divisors (see below), whose sum is σ = 2705073084. Its totient is φ = 458001664.

The previous prime is 1145004241. The next prime is 1145004337. The reversal of 1145004320 is 234005411.

It can be written as a sum of positive squares in 2 ways, for example, as 1143251344 + 1752976 = 33812^2 + 1324^2 .

It is a super-2 number, since 2×1145004320² = 2622069785637324800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1145004292 and 1145004301.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3577979 + ... + 3578298.

Almost surely, 2^1145004320 is an apocalyptic number.

1145004320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145004320 is an abundant number, since it is smaller than the sum of its proper divisors (1560068764).

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

1145004320 is an equidigital number, since it uses as much as digits as its factorization.

1145004320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7156292 (or 7156284 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 1145004320 is about 33837.9124651625. The cubic root of 1145004320 is about 1046.1702723222.

Adding to 1145004320 its reverse (234005411), we get a palindrome (1379009731).

The spelling of 1145004320 in words is "one billion, one hundred forty-five million, four thousand, three hundred twenty".