2720254640 has 60 divisors (see below), whose sum is σ = 6361726752. Its totient is φ = 1081745280.

The previous prime is 2720254633. The next prime is 2720254703. The reversal of 2720254640 is 464520272.

It is a junction number, because it is equal to n+sod(n) for n = 2720254597 and 2720254606.

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 11 ways as a sum of consecutive naturals, for example, 5875049 + ... + 5875511.

Almost surely, 2^2720254640 is an apocalyptic number.

2720254640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2720254640 is an abundant number, since it is smaller than the sum of its proper divisors (3641472112).

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

2720254640 is an equidigital number, since it uses as much as digits as its factorization.

2720254640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 2720254640 is about 52156.0604340474. The cubic root of 2720254640 is about 1395.9499685137.

The spelling of 2720254640 in words is "two billion, seven hundred twenty million, two hundred fifty-four thousand, six hundred forty".