2605045320 has 512 divisors, whose sum is σ = 9953280000. Its totient is φ = 602173440.

The previous prime is 2605045301. The next prime is 2605045361. The reversal of 2605045320 is 235405062.

2605045320 is a `hidden beast` number, since 2 + 605 + 0 + 4 + 53 + 2 + 0 = 666.

It is a super-2 number, since 2×2605045320² = 13572522238507804800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13090581 + ... + 13090779.

It is an arithmetic number, because the mean of its divisors is an integer number (19440000).

Almost surely, 2^2605045320 is an apocalyptic number.

2605045320 is a gapful number since it is divisible by the number (20) 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 2605045320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4976640000).

2605045320 is an abundant number, since it is smaller than the sum of its proper divisors (7348234680).

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

2605045320 is a wasteful number, since it uses less digits than its factorization.

2605045320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 2605045320 is about 51039.6445912391. The cubic root of 2605045320 is about 1375.9577362740.

The spelling of 2605045320 in words is "two billion, six hundred five million, forty-five thousand, three hundred twenty".