628604544 has 128 divisors (see below), whose sum is σ = 1732106880. Its totient is φ = 201830400.

The previous prime is 628604521. The next prime is 628604549. The reversal of 628604544 is 445406826.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628604549) 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, 2145262 + ... + 2145554.

It is an arithmetic number, because the mean of its divisors is an integer number (13532085).

Almost surely, 2^628604544 is an apocalyptic number.

628604544 is a gapful number since it is divisible by the number (64) 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 628604544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866053440).

628604544 is an abundant number, since it is smaller than the sum of its proper divisors (1103502336).

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

628604544 is a wasteful number, since it uses less digits than its factorization.

628604544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

The square root of 628604544 is about 25071.9872367549. The cubic root of 628604544 is about 856.6284725780.

The spelling of 628604544 in words is "six hundred twenty-eight million, six hundred four thousand, five hundred forty-four".