628857498880 has 144 divisors (see below), whose sum is σ = 1624715293824. Its totient is φ = 231830691840.

The previous prime is 628857498869. The next prime is 628857498887. The reversal of 628857498880 is 88894758826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628857498887) 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, 10736875 + ... + 10795285.

It is an arithmetic number, because the mean of its divisors is an integer number (11282745096).

Almost surely, 2^628857498880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628857498880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (812357646912).

628857498880 is an abundant number, since it is smaller than the sum of its proper divisors (995857794944).

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

628857498880 is a wasteful number, since it uses less digits than its factorization.

628857498880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59092 (or 59078 counting only the distinct ones).

The product of its (nonzero) digits is 495452160, while the sum is 73.

The spelling of 628857498880 in words is "six hundred twenty-eight billion, eight hundred fifty-seven million, four hundred ninety-eight thousand, eight hundred eighty".