628303815 has 48 divisors (see below), whose sum is σ = 1127782656. Its totient is φ = 323251200.

The previous prime is 628303787. The next prime is 628303829. The reversal of 628303815 is 518303826.

It is not a de Polignac number, because 628303815 - 2⁶ = 628303751 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628303815.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 642607 + ... + 643583.

It is an arithmetic number, because the mean of its divisors is an integer number (23495472).

Almost surely, 2^628303815 is an apocalyptic number.

628303815 is a deficient number, since it is larger than the sum of its proper divisors (499478841).

628303815 is a wasteful number, since it uses less digits than its factorization.

628303815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 628303815 is about 25065.9892084873. The cubic root of 628303815 is about 856.4918450175.

The spelling of 628303815 in words is "six hundred twenty-eight million, three hundred three thousand, eight hundred fifteen".