428984565 has 16 divisors (see below), whose sum is σ = 722500800. Its totient is φ = 216749952.

The previous prime is 428984561. The next prime is 428984593. The reversal of 428984565 is 565489824.

It is a happy number.

It is not a de Polignac number, because 428984565 - 2² = 428984561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428984561) 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, 752320 + ... + 752889.

It is an arithmetic number, because the mean of its divisors is an integer number (45156300).

Almost surely, 2^428984565 is an apocalyptic number.

It is an amenable number.

428984565 is a deficient number, since it is larger than the sum of its proper divisors (293516235).

428984565 is a wasteful number, since it uses less digits than its factorization.

428984565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505236.

The product of its digits is 2764800, while the sum is 51.

The square root of 428984565 is about 20711.9425694453. The cubic root of 428984565 is about 754.1896279990.

The spelling of 428984565 in words is "four hundred twenty-eight million, nine hundred eighty-four thousand, five hundred sixty-five".