628989936 has 160 divisors (see below), whose sum is σ = 1795385088. Its totient is φ = 188928000.

The previous prime is 628989917. The next prime is 628989937. The reversal of 628989936 is 639989826.

It is a self number, because there is not a number n which added to its sum of digits gives 628989936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628989937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2505811 + ... + 2506061.

Almost surely, 2^628989936 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 628989936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (897692544).

628989936 is an abundant number, since it is smaller than the sum of its proper divisors (1166395152).

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

628989936 is a wasteful number, since it uses less digits than its factorization.

628989936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 393 counting only the distinct ones).

The product of its digits is 10077696, while the sum is 60.

The square root of 628989936 is about 25079.6717681871. The cubic root of 628989936 is about 856.8035006452.

The spelling of 628989936 in words is "six hundred twenty-eight million, nine hundred eighty-nine thousand, nine hundred thirty-six".