28430548845 has 8 divisors (see below), whose sum is σ = 45488878176. Its totient is φ = 15162959376.

The previous prime is 28430548763. The next prime is 28430548847. The reversal of 28430548845 is 54884503482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28430548845 - 2⁷ = 28430548717 is a prime.

It is a super-2 number, since 2×28430548845² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28430548847) 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, 947684947 + ... + 947684976.

It is an arithmetic number, because the mean of its divisors is an integer number (5686109772).

Almost surely, 2^28430548845 is an apocalyptic number.

It is an amenable number.

28430548845 is a deficient number, since it is larger than the sum of its proper divisors (17058329331).

28430548845 is a wasteful number, since it uses less digits than its factorization.

28430548845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895369931.

The product of its (nonzero) digits is 4915200, while the sum is 51.

It can be divided in two parts, 28430 and 548845, that added together give a triangular number (577275 = T₁₀₇₄).

The spelling of 28430548845 in words is "twenty-eight billion, four hundred thirty million, five hundred forty-eight thousand, eight hundred forty-five".