628161946 has 16 divisors (see below), whose sum is σ = 948672000. Its totient is φ = 311943520.

The previous prime is 628161923. The next prime is 628161949. The reversal of 628161946 is 649161826.

It is not an unprimeable number, because it can be changed into a prime (628161949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 418305 + ... + 419803.

It is an arithmetic number, because the mean of its divisors is an integer number (59292000).

Almost surely, 2^628161946 is an apocalyptic number.

628161946 is a deficient number, since it is larger than the sum of its proper divisors (320510054).

628161946 is a wasteful number, since it uses less digits than its factorization.

628161946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789.

The product of its digits is 124416, while the sum is 43.

The square root of 628161946 is about 25063.1591384646. The cubic root of 628161946 is about 856.4273757882.

The spelling of 628161946 in words is "six hundred twenty-eight million, one hundred sixty-one thousand, nine hundred forty-six".