2600020720 has 40 divisors (see below), whose sum is σ = 6594600240. Its totient is φ = 945461760.

The previous prime is 2600020711. The next prime is 2600020739. The reversal of 2600020720 is 270200062.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476405 + ... + 1478164.

It is an arithmetic number, because the mean of its divisors is an integer number (164865006).

Almost surely, 2^2600020720 is an apocalyptic number.

2600020720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2600020720 is an abundant number, since it is smaller than the sum of its proper divisors (3994579520).

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

2600020720 is a wasteful number, since it uses less digits than its factorization.

2600020720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954593 (or 2954587 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2600020720 is about 50990.3983118391. The cubic root of 2600020720 is about 1375.0725198115.

Adding to 2600020720 its reverse (270200062), we get a palindrome (2870220782).

The spelling of 2600020720 in words is "two billion, six hundred million, twenty thousand, seven hundred twenty".