28205538346 has 8 divisors (see below), whose sum is σ = 42368663844. Its totient is φ = 14082650400.

The previous prime is 28205538337. The next prime is 28205538373. The reversal of 28205538346 is 64383550282.

It can be written as a sum of positive squares in 2 ways, for example, as 28203507721 + 2030625 = 167939^2 + 1425^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 28205538296 and 28205538305.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10057635 + ... + 10060438.

Almost surely, 2^28205538346 is an apocalyptic number.

28205538346 is a deficient number, since it is larger than the sum of its proper divisors (14163125498).

28205538346 is a wasteful number, since it uses less digits than its factorization.

28205538346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20118776.

The product of its (nonzero) digits is 1382400, while the sum is 46.

The spelling of 28205538346 in words is "twenty-eight billion, two hundred five million, five hundred thirty-eight thousand, three hundred forty-six".