428162913 has 6 divisors (see below), whose sum is σ = 618457554. Its totient is φ = 285441936.

The previous prime is 428162893. The next prime is 428162923. The reversal of 428162913 is 319261824.

428162913 is a `hidden beast` number, since 4 + 28 + 1 + 629 + 1 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 242331489 + 185831424 = 15567^2 + 13632^2 .

It is not a de Polignac number, because 428162913 - 2⁶ = 428162849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428162923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23786820 + ... + 23786837.

It is an arithmetic number, because the mean of its divisors is an integer number (103076259).

Almost surely, 2^428162913 is an apocalyptic number.

It is an amenable number.

428162913 is a deficient number, since it is larger than the sum of its proper divisors (190294641).

428162913 is a wasteful number, since it uses less digits than its factorization.

428162913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47573663 (or 47573660 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 428162913 is about 20692.0978395135. The cubic root of 428162913 is about 753.7078099864.

The spelling of 428162913 in words is "four hundred twenty-eight million, one hundred sixty-two thousand, nine hundred thirteen".