28428311068 has 12 divisors (see below), whose sum is σ = 49925339800. Its totient is φ = 14163928272.

The previous prime is 28428311033. The next prime is 28428311069. The reversal of 28428311068 is 86011382482.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28428311069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12555543 + ... + 12557806.

Almost surely, 2^28428311068 is an apocalyptic number.

It is an amenable number.

28428311068 is a deficient number, since it is larger than the sum of its proper divisors (21497028732).

28428311068 is a wasteful number, since it uses less digits than its factorization.

28428311068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25113636 (or 25113634 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 28428311068 in words is "twenty-eight billion, four hundred twenty-eight million, three hundred eleven thousand, sixty-eight".