628005447 has 16 divisors (see below), whose sum is σ = 932544480. Its totient is φ = 417695616.

The previous prime is 628005407. The next prime is 628005463. The reversal of 628005447 is 744500826.

It is not a de Polignac number, because 628005447 - 2¹⁰ = 628004423 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628005407) 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, 15168 + ... + 38549.

It is an arithmetic number, because the mean of its divisors is an integer number (58284030).

Almost surely, 2^628005447 is an apocalyptic number.

628005447 is a deficient number, since it is larger than the sum of its proper divisors (304539033).

628005447 is a wasteful number, since it uses less digits than its factorization.

628005447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54159 (or 54153 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 628005447 is about 25060.0368515292. The cubic root of 628005447 is about 856.3562470180.

The spelling of 628005447 in words is "six hundred twenty-eight million, five thousand, four hundred forty-seven".