628028628428 has 6 divisors (see below), whose sum is σ = 1099050099756. Its totient is φ = 314014314212.

The previous prime is 628028628419. The next prime is 628028628467. The reversal of 628028628428 is 824826820826.

628028628428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78503578550 + ... + 78503578557.

It is an arithmetic number, because the mean of its divisors is an integer number (183175016626).

Almost surely, 2^628028628428 is an apocalyptic number.

It is an amenable number.

628028628428 is a deficient number, since it is larger than the sum of its proper divisors (471021471328).

628028628428 is a wasteful number, since it uses less digits than its factorization.

628028628428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157007157111 (or 157007157109 counting only the distinct ones).

The product of its (nonzero) digits is 9437184, while the sum is 56.

The spelling of 628028628428 in words is "six hundred twenty-eight billion, twenty-eight million, six hundred twenty-eight thousand, four hundred twenty-eight".