28730825843 has 32 divisors (see below), whose sum is σ = 31977068544. Its totient is φ = 25675702272.

The previous prime is 28730825839. The next prime is 28730825873. The reversal of 28730825843 is 34852803782.

It is a cyclic number.

It is not a de Polignac number, because 28730825843 - 2² = 28730825839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28730825791 and 28730825800.

It is not an unprimeable number, because it can be changed into a prime (28730825803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49793171 + ... + 49793747.

It is an arithmetic number, because the mean of its divisors is an integer number (999283392).

Almost surely, 2^28730825843 is an apocalyptic number.

28730825843 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

28730825843 is a deficient number, since it is larger than the sum of its proper divisors (3246242701).

28730825843 is a wasteful number, since it uses less digits than its factorization.

28730825843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331.

The product of its (nonzero) digits is 2580480, while the sum is 50.

The spelling of 28730825843 in words is "twenty-eight billion, seven hundred thirty million, eight hundred twenty-five thousand, eight hundred forty-three".