628017489 has 32 divisors (see below), whose sum is σ = 1017878400. Its totient is φ = 379529280.

The previous prime is 628017487. The next prime is 628017493. The reversal of 628017489 is 984710826.

628017489 is a `hidden beast` number, since 628 + 0 + 17 + 4 + 8 + 9 = 666.

628017489 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 628017489 - 2¹ = 628017487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (628017487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107947 + ... + 113615.

It is an arithmetic number, because the mean of its divisors is an integer number (31808700).

Almost surely, 2^628017489 is an apocalyptic number.

It is an amenable number.

628017489 is a deficient number, since it is larger than the sum of its proper divisors (389860911).

628017489 is a wasteful number, since it uses less digits than its factorization.

628017489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6062 (or 6056 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 628017489 is about 25060.2771133920. The cubic root of 628017489 is about 856.3617205247.

The spelling of 628017489 in words is "six hundred twenty-eight million, seventeen thousand, four hundred eighty-nine".