28063012420 has 24 divisors (see below), whose sum is σ = 58969620864. Its totient is φ = 11218101216.

The previous prime is 28063012387. The next prime is 28063012499. The reversal of 28063012420 is 2421036082.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411534 + ... + 474853.

It is an arithmetic number, because the mean of its divisors is an integer number (2457067536).

Almost surely, 2^28063012420 is an apocalyptic number.

28063012420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28063012420 is an abundant number, since it is smaller than the sum of its proper divisors (30906608444).

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

28063012420 is a wasteful number, since it uses less digits than its factorization.

28063012420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887979 (or 887977 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The spelling of 28063012420 in words is "twenty-eight billion, sixty-three million, twelve thousand, four hundred twenty".