628903800 has 576 divisors, whose sum is σ = 2646259200. Its totient is φ = 130636800.

The previous prime is 628903787. The next prime is 628903801. The reversal of 628903800 is 8309826.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628903801) 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 143 ways as a sum of consecutive naturals, for example, 8857765 + ... + 8857835.

It is an arithmetic number, because the mean of its divisors is an integer number (4594200).

Almost surely, 2^628903800 is an apocalyptic number.

628903800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628903800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323129600).

628903800 is an abundant number, since it is smaller than the sum of its proper divisors (2017355400).

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

628903800 is a wasteful number, since it uses less digits than its factorization.

628903800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 628903800 is about 25077.9544620370. The cubic root of 628903800 is about 856.7643876742.

The spelling of 628903800 in words is "six hundred twenty-eight million, nine hundred three thousand, eight hundred".