628670303281 has 16 divisors (see below), whose sum is σ = 693419673600. Its totient is φ = 567303781968.

The previous prime is 628670303269. The next prime is 628670303341. The reversal of 628670303281 is 182303076826.

628670303281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 628670303281 - 2⁹ = 628670302769 is a prime.

It is a super-2 number, since 2×628670303281² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (628670303981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2905191 + ... + 3114076.

It is an arithmetic number, because the mean of its divisors is an integer number (43338729600).

Almost surely, 2^628670303281 is an apocalyptic number.

It is an amenable number.

628670303281 is a deficient number, since it is larger than the sum of its proper divisors (64749370319).

628670303281 is a wasteful number, since it uses less digits than its factorization.

628670303281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6019548.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 628670303281 in words is "six hundred twenty-eight billion, six hundred seventy million, three hundred three thousand, two hundred eighty-one".