1145640304 has 80 divisors (see below), whose sum is σ = 2369848320. Its totient is φ = 535392000.

The previous prime is 1145640277. The next prime is 1145640311. The reversal of 1145640304 is 4030465411.

It is a super-2 number, since 2×1145640304² = 2624983412298424832, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4564179 + ... + 4564429.

It is an arithmetic number, because the mean of its divisors is an integer number (29623104).

Almost surely, 2^1145640304 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 1145640304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1184924160).

1145640304 is an abundant number, since it is smaller than the sum of its proper divisors (1224208016).

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

1145640304 is a wasteful number, since it uses less digits than its factorization.

1145640304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 512 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1145640304 is about 33847.3086670122. The cubic root of 1145640304 is about 1046.3639322625.

The spelling of 1145640304 in words is "one billion, one hundred forty-five million, six hundred forty thousand, three hundred four".