27628027858 has 8 divisors (see below), whose sum is σ = 42452823420. Its totient is φ = 13477086720.

The previous prime is 27628027837. The next prime is 27628027873. The reversal of 27628027858 is 85872082672.

It can be written as a sum of positive squares in 2 ways, for example, as 27405809209 + 222218649 = 165547^2 + 14907^2 .

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 = 27628027799 and 27628027808.

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, 168463503 + ... + 168463666.

Almost surely, 2^27628027858 is an apocalyptic number.

27628027858 is a deficient number, since it is larger than the sum of its proper divisors (14824795562).

27628027858 is a wasteful number, since it uses less digits than its factorization.

27628027858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336927212.

The product of its (nonzero) digits is 6021120, while the sum is 55.

The spelling of 27628027858 in words is "twenty-seven billion, six hundred twenty-eight million, twenty-seven thousand, eight hundred fifty-eight".