428165568 has 56 divisors (see below), whose sum is σ = 1258732560. Its totient is φ = 142721280.

The previous prime is 428165567. The next prime is 428165579. The reversal of 428165568 is 865561824.

428165568 is a `hidden beast` number, since 4 + 2 + 81 + 6 + 5 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428165567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122163 + ... + 125618.

Almost surely, 2^428165568 is an apocalyptic number.

428165568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

428165568 is an abundant number, since it is smaller than the sum of its proper divisors (830566992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428165568 is a wasteful number, since it uses less digits than its factorization.

428165568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247802 (or 247786 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 428165568 is about 20692.1619943398. The cubic root of 428165568 is about 753.7093678748.

It can be divided in two parts, 42816 and 5568, that added together give a palindrome (48384).

The spelling of 428165568 in words is "four hundred twenty-eight million, one hundred sixty-five thousand, five hundred sixty-eight".