28258194249 has 8 divisors (see below), whose sum is σ = 41863991520. Its totient is φ = 18838796148.

The previous prime is 28258194241. The next prime is 28258194259. The reversal of 28258194249 is 94249185282.

It is not a de Polignac number, because 28258194249 - 2³ = 28258194241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28258194195 and 28258194204.

It is not an unprimeable number, because it can be changed into a prime (28258194241) 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, 523299867 + ... + 523299920.

It is an arithmetic number, because the mean of its divisors is an integer number (5232998940).

Almost surely, 2^28258194249 is an apocalyptic number.

It is an amenable number.

28258194249 is a deficient number, since it is larger than the sum of its proper divisors (13605797271).

28258194249 is a wasteful number, since it uses less digits than its factorization.

28258194249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046599796 (or 1046599790 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 28258194249 in words is "twenty-eight billion, two hundred fifty-eight million, one hundred ninety-four thousand, two hundred forty-nine".