28601632258 has 4 divisors (see below), whose sum is σ = 42902448390. Its totient is φ = 14300816128.

The previous prime is 28601632247. The next prime is 28601632271. The reversal of 28601632258 is 85223610682.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24841857769 + 3759774489 = 157613^2 + 61317^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7150408063 + ... + 7150408066.

Almost surely, 2^28601632258 is an apocalyptic number.

28601632258 is a deficient number, since it is larger than the sum of its proper divisors (14300816132).

28601632258 is a wasteful number, since it uses less digits than its factorization.

28601632258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14300816131.

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 28601632258 in words is "twenty-eight billion, six hundred one million, six hundred thirty-two thousand, two hundred fifty-eight".