628824878 has 16 divisors (see below), whose sum is σ = 1035545904. Its totient is φ = 284007360.

The previous prime is 628824871. The next prime is 628824881. The reversal of 628824878 is 878428826.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628824871) by changing a digit.

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, 87575 + ... + 94482.

It is an arithmetic number, because the mean of its divisors is an integer number (64721619).

Almost surely, 2^628824878 is an apocalyptic number.

628824878 is a deficient number, since it is larger than the sum of its proper divisors (406721026).

628824878 is a wasteful number, since it uses less digits than its factorization.

628824878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182227.

The product of its digits is 2752512, while the sum is 53.

The square root of 628824878 is about 25076.3808792258. The cubic root of 628824878 is about 856.7285473291.

The spelling of 628824878 in words is "six hundred twenty-eight million, eight hundred twenty-four thousand, eight hundred seventy-eight".