2680620240 has 80 divisors (see below), whose sum is σ = 8316217728. Its totient is φ = 714290688.

The previous prime is 2680620223. The next prime is 2680620259. The reversal of 2680620240 is 420260862.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2680620198 and 2680620207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389469 + ... + 396291.

Almost surely, 2^2680620240 is an apocalyptic number.

2680620240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2680620240 is an abundant number, since it is smaller than the sum of its proper divisors (5635597488).

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

2680620240 is a wasteful number, since it uses less digits than its factorization.

2680620240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476 (or 8470 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 2680620240 is about 51774.7065660444. The cubic root of 2680620240 is about 1389.1370590516.

The spelling of 2680620240 in words is "two billion, six hundred eighty million, six hundred twenty thousand, two hundred forty".