628381936 has 40 divisors (see below), whose sum is σ = 1498452704. Its totient is φ = 248590080.

The previous prime is 628381933. The next prime is 628381937. The reversal of 628381936 is 639183826.

It is a super-2 number, since 2×628381936² = 789727714982216192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628381933) 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, 214335 + ... + 217246.

Almost surely, 2^628381936 is an apocalyptic number.

It is an amenable number.

628381936 is an abundant number, since it is smaller than the sum of its proper divisors (870070768).

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

628381936 is a wasteful number, since it uses less digits than its factorization.

628381936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431609 (or 431603 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 628381936 is about 25067.5474667946. The cubic root of 628381936 is about 856.5273412349.

The spelling of 628381936 in words is "six hundred twenty-eight million, three hundred eighty-one thousand, nine hundred thirty-six".