628449453 has 48 divisors (see below), whose sum is σ = 996802560. Its totient is φ = 380052000.

The previous prime is 628449449. The next prime is 628449463. The reversal of 628449453 is 354944826.

628449453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 628449453 - 2² = 628449449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 628449399 and 628449408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628449433) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 545428 + ... + 546578.

It is an arithmetic number, because the mean of its divisors is an integer number (20766720).

Almost surely, 2^628449453 is an apocalyptic number.

It is an amenable number.

628449453 is a deficient number, since it is larger than the sum of its proper divisors (368353107).

628449453 is a wasteful number, since it uses less digits than its factorization.

628449453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1310 (or 1307 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The square root of 628449453 is about 25068.8941319716. The cubic root of 628449453 is about 856.5580168915.

The spelling of 628449453 in words is "six hundred twenty-eight million, four hundred forty-nine thousand, four hundred fifty-three".