628382811 has 12 divisors (see below), whose sum is σ = 974634792. Its totient is φ = 359075808.

The previous prime is 628382773. The next prime is 628382831. The reversal of 628382811 is 118283826.

It is not a de Polignac number, because 628382811 - 2⁷ = 628382683 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 628382811.

It is not an unprimeable number, because it can be changed into a prime (628382831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2137210 + ... + 2137503.

It is an arithmetic number, because the mean of its divisors is an integer number (81219566).

Almost surely, 2^628382811 is an apocalyptic number.

628382811 is a deficient number, since it is larger than the sum of its proper divisors (346251981).

628382811 is a wasteful number, since it uses less digits than its factorization.

628382811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4274730 (or 4274723 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 628382811 is about 25067.5649196327. The cubic root of 628382811 is about 856.5277387963.

The spelling of 628382811 in words is "six hundred twenty-eight million, three hundred eighty-two thousand, eight hundred eleven".