628275419 has 4 divisors (see below), whose sum is σ = 648542400. Its totient is φ = 608008440.

The previous prime is 628275407. The next prime is 628275421. The reversal of 628275419 is 914572826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 628275419 - 2⁸ = 628275163 is a prime.

It is a super-2 number, since 2×628275419² = 789460004239251122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 628275419.

It is not an unprimeable number, because it can be changed into a prime (627275419) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10133444 + ... + 10133505.

It is an arithmetic number, because the mean of its divisors is an integer number (162135600).

Almost surely, 2^628275419 is an apocalyptic number.

628275419 is a deficient number, since it is larger than the sum of its proper divisors (20266981).

628275419 is a wasteful number, since it uses less digits than its factorization.

628275419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20266980.

The product of its digits is 241920, while the sum is 44.

The square root of 628275419 is about 25065.4227772045. The cubic root of 628275419 is about 856.4789418602.

The spelling of 628275419 in words is "six hundred twenty-eight million, two hundred seventy-five thousand, four hundred nineteen".