2609492240 has 20 divisors (see below), whose sum is σ = 6067069644. Its totient is φ = 1043796864.

The previous prime is 2609492227. The next prime is 2609492381. The reversal of 2609492240 is 422949062.

It can be written as a sum of positive squares in 2 ways, for example, as 1339852816 + 1269639424 = 36604^2 + 35632^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 2609492194 and 2609492203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16309247 + ... + 16309406.

Almost surely, 2^2609492240 is an apocalyptic number.

2609492240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2609492240 is an abundant number, since it is smaller than the sum of its proper divisors (3457577404).

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

2609492240 is a wasteful number, since it uses less digits than its factorization.

2609492240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32618666 (or 32618660 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 2609492240 is about 51083.1894070838. The cubic root of 2609492240 is about 1376.7402300962.

The spelling of 2609492240 in words is "two billion, six hundred nine million, four hundred ninety-two thousand, two hundred forty".