628056454 has 4 divisors (see below), whose sum is σ = 942084684. Its totient is φ = 314028226.

The previous prime is 628056437. The next prime is 628056461. The reversal of 628056454 is 454650826.

628056454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×628056454² = 788909818822108232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157014112 + ... + 157014115.

It is an arithmetic number, because the mean of its divisors is an integer number (235521171).

Almost surely, 2^628056454 is an apocalyptic number.

628056454 is a deficient number, since it is larger than the sum of its proper divisors (314028230).

628056454 is a wasteful number, since it uses less digits than its factorization.

628056454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314028229.

The product of its (nonzero) digits is 230400, while the sum is 40.

The square root of 628056454 is about 25061.0545268949. The cubic root of 628056454 is about 856.3794309892.

The spelling of 628056454 in words is "six hundred twenty-eight million, fifty-six thousand, four hundred fifty-four".