28314932146 has 8 divisors (see below), whose sum is σ = 42608093724. Its totient is φ = 14112234240.

The previous prime is 28314932137. The next prime is 28314932147. The reversal of 28314932146 is 64123941382.

It can be written as a sum of positive squares in 2 ways, for example, as 27220050225 + 1094881921 = 164985^2 + 33089^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28314932147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22615135 + ... + 22616386.

Almost surely, 2^28314932146 is an apocalyptic number.

28314932146 is a deficient number, since it is larger than the sum of its proper divisors (14293161578).

28314932146 is a wasteful number, since it uses less digits than its factorization.

28314932146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45231836.

The product of its digits is 248832, while the sum is 43.

The spelling of 28314932146 in words is "twenty-eight billion, three hundred fourteen million, nine hundred thirty-two thousand, one hundred forty-six".