628313506 has 32 divisors (see below), whose sum is σ = 1035669888. Its totient is φ = 284686080.

The previous prime is 628313461. The next prime is 628313509. The reversal of 628313506 is 605313826.

628313506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (628313509) 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, 100776 + ... + 106828.

It is an arithmetic number, because the mean of its divisors is an integer number (32364684).

Almost surely, 2^628313506 is an apocalyptic number.

628313506 is a deficient number, since it is larger than the sum of its proper divisors (407356382).

628313506 is a wasteful number, since it uses less digits than its factorization.

628313506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 628313506 is about 25066.1825174876. The cubic root of 628313506 is about 856.4962485240.

The spelling of 628313506 in words is "six hundred twenty-eight million, three hundred thirteen thousand, five hundred six".