2604350440 has 24 divisors (see below), whose sum is σ = 5860514790. Its totient is φ = 1041611072.

The previous prime is 2604350321. The next prime is 2604350449. The reversal of 2604350440 is 440534062.

It can be written as a sum of positive squares in 3 ways, for example, as 338780836 + 2265569604 = 18406^2 + 47598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2604350399 and 2604350408.

It is not an unprimeable number, because it can be changed into a prime (2604350449) 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 5 ways as a sum of consecutive naturals, for example, 318726 + ... + 326794.

Almost surely, 2^2604350440 is an apocalyptic number.

2604350440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2604350440 is an abundant number, since it is smaller than the sum of its proper divisors (3256164350).

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

2604350440 is an frugal number, since it uses more digits than its factorization.

2604350440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16149 (or 8076 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2604350440 is about 51032.8368797973. The cubic root of 2604350440 is about 1375.8353826076.

The spelling of 2604350440 in words is "two billion, six hundred four million, three hundred fifty thousand, four hundred forty".