28020011068 has 24 divisors (see below), whose sum is σ = 56192740352. Its totient is φ = 11975850864.

The previous prime is 28020011057. The next prime is 28020011069. The reversal of 28020011068 is 86011002082.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28020011069) 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, 1353096 + ... + 1373647.

Almost surely, 2^28020011068 is an apocalyptic number.

28020011068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28020011068 is an abundant number, since it is smaller than the sum of its proper divisors (28172729284).

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

28020011068 is a wasteful number, since it uses less digits than its factorization.

28020011068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2727121 (or 2727119 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The spelling of 28020011068 in words is "twenty-eight billion, twenty million, eleven thousand, sixty-eight".