628705476 has 135 divisors (see below), whose sum is σ = 1921552479. Its totient is φ = 178727472.

The previous prime is 628705447. The next prime is 628705501. The reversal of 628705476 is 674507826.

The square root of 628705476 is 25074.

It is a perfect power (a square), and thus also a powerful number.

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 44 ways as a sum of consecutive naturals, for example, 3159225 + ... + 3159423.

Almost surely, 2^628705476 is an apocalyptic number.

628705476 is the 25074-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628705476

628705476 is an abundant number, since it is smaller than the sum of its proper divisors (1292847003).

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

628705476 is a wasteful number, since it uses less digits than its factorization.

628705476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 211 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The cubic root of 628705476 is about 856.6743183585.

The spelling of 628705476 in words is "six hundred twenty-eight million, seven hundred five thousand, four hundred seventy-six".