2628753640 has 32 divisors (see below), whose sum is σ = 5972129280. Its totient is φ = 1041291072.

The previous prime is 2628753623. The next prime is 2628753653. The reversal of 2628753640 is 463578262.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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, 314904 + ... + 323143.

It is an arithmetic number, because the mean of its divisors is an integer number (186629040).

Almost surely, 2^2628753640 is an apocalyptic number.

2628753640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2628753640 is an abundant number, since it is smaller than the sum of its proper divisors (3343375640).

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

2628753640 is a wasteful number, since it uses less digits than its factorization.

2628753640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638161 (or 638157 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 2628753640 is about 51271.3725191749. The cubic root of 2628753640 is about 1380.1192993553.

The spelling of 2628753640 in words is "two billion, six hundred twenty-eight million, seven hundred fifty-three thousand, six hundred forty".