2668321628 has 12 divisors (see below), whose sum is σ = 5336643312. Its totient is φ = 1143566400.

The previous prime is 2668321627. The next prime is 2668321633. The reversal of 2668321628 is 8261238662.

2668321628 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668321627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47648573 + ... + 47648628.

It is an arithmetic number, because the mean of its divisors is an integer number (444720276).

Almost surely, 2^2668321628 is an apocalyptic number.

2668321628 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2668321628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2668321628 is a wasteful number, since it uses less digits than its factorization.

2668321628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95297212 (or 95297210 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The square root of 2668321628 is about 51655.7995582297. The cubic root of 2668321628 is about 1387.0093609013.

The spelling of 2668321628 in words is "two billion, six hundred sixty-eight million, three hundred twenty-one thousand, six hundred twenty-eight".