628868424 has 32 divisors (see below), whose sum is σ = 1591117920. Its totient is φ = 207096576.

The previous prime is 628868423. The next prime is 628868453. The reversal of 628868424 is 424868826.

628868424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (628868423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155857 + ... + 159840.

It is an arithmetic number, because the mean of its divisors is an integer number (49722435).

Almost surely, 2^628868424 is an apocalyptic number.

It is an amenable number.

628868424 is an abundant number, since it is smaller than the sum of its proper divisors (962249496).

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

628868424 is a wasteful number, since it uses less digits than its factorization.

628868424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315789 (or 315785 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 48.

The square root of 628868424 is about 25077.2491314339. The cubic root of 628868424 is about 856.7483229675.

The spelling of 628868424 in words is "six hundred twenty-eight million, eight hundred sixty-eight thousand, four hundred twenty-four".