28730928004 has 9 divisors (see below), whose sum is σ = 50279717271. Its totient is φ = 14365294500.

The previous prime is 28730927989. The next prime is 28730928049. The reversal of 28730928004 is 40082903782.

It is a happy number.

The square root of 28730928004 is 169502.

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

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, 296629 + ... + 381379.

Almost surely, 2^28730928004 is an apocalyptic number.

28730928004 is the 169502-nd square number.

It is an amenable number.

28730928004 is a deficient number, since it is larger than the sum of its proper divisors (21548789267).

28730928004 is an frugal number, since it uses more digits than its factorization.

28730928004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169506 (or 84753 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 28730928004 in words is "twenty-eight billion, seven hundred thirty million, nine hundred twenty-eight thousand, four".