28873486084 has 9 divisors (see below), whose sum is σ = 50529195381. Its totient is φ = 14436573120.

The previous prime is 28873486073. The next prime is 28873486091. The reversal of 28873486084 is 48068437882.

It is a happy number.

The square root of 28873486084 is 169922.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 20643367684 + 8230118400 = 143678^2 + 90720^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 297364 + ... + 382324.

Almost surely, 2^28873486084 is an apocalyptic number.

28873486084 is the 169922-nd square number.

It is an amenable number.

28873486084 is a deficient number, since it is larger than the sum of its proper divisors (21655709297).

28873486084 is an frugal number, since it uses more digits than its factorization.

28873486084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169926 (or 84963 counting only the distinct ones).

The product of its (nonzero) digits is 16515072, while the sum is 58.

The spelling of 28873486084 in words is "twenty-eight billion, eight hundred seventy-three million, four hundred eighty-six thousand, eighty-four".