628315449 has 16 divisors (see below), whose sum is σ = 882358272. Its totient is φ = 396915728.

The previous prime is 628315439. The next prime is 628315459. The reversal of 628315449 is 944513826.

It is an interprime number because it is at equal distance from previous prime (628315439) and next prime (628315459).

It is a cyclic number.

It is not a de Polignac number, because 628315449 - 2⁷ = 628315321 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 628315449.

It is not an unprimeable number, because it can be changed into a prime (628315439) 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, 35169 + ... + 49934.

It is an arithmetic number, because the mean of its divisors is an integer number (55147392).

Almost surely, 2^628315449 is an apocalyptic number.

628315449 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

628315449 is a deficient number, since it is larger than the sum of its proper divisors (254042823).

628315449 is a wasteful number, since it uses less digits than its factorization.

628315449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85236.

The product of its digits is 207360, while the sum is 42.

The square root of 628315449 is about 25066.2212748551. The cubic root of 628315449 is about 856.4971314009.

The spelling of 628315449 in words is "six hundred twenty-eight million, three hundred fifteen thousand, four hundred forty-nine".