8400000028 has 24 divisors (see below), whose sum is σ = 17142860000. Its totient is φ = 3599999424.

The previous prime is 8400000001. The next prime is 8400000029. The reversal of 8400000028 is 8200000048.

It is a junction number, because it is equal to n+sod(n) for n = 8399999954 and 8400000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400000029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3059853 + ... + 3062596.

Almost surely, 2^8400000028 is an apocalyptic number.

It is an amenable number.

8400000028 is an abundant number, since it is smaller than the sum of its proper divisors (8742859972).

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

8400000028 is a wasteful number, since it uses less digits than its factorization.

8400000028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6122474 (or 6122458 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 8400000028 is about 91651.5140518693. The cubic root of 8400000028 is about 2032.7927158884.

The spelling of 8400000028 in words is "eight billion, four hundred million, twenty-eight", and thus it is an aban number.