628843040 has 96 divisors (see below), whose sum is σ = 1711632384. Its totient is φ = 213857280.

The previous prime is 628843037. The next prime is 628843067. The reversal of 628843040 is 40348826.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140030 + ... + 144450.

It is an arithmetic number, because the mean of its divisors is an integer number (17829504).

Almost surely, 2^628843040 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 628843040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855816192).

628843040 is an abundant number, since it is smaller than the sum of its proper divisors (1082789344).

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

628843040 is a wasteful number, since it uses less digits than its factorization.

628843040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4570 (or 4562 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 628843040 is about 25076.7430102077. The cubic root of 628843040 is about 856.7367953881.

The spelling of 628843040 in words is "six hundred twenty-eight million, eight hundred forty-three thousand, forty".