27872905 has 8 divisors (see below), whose sum is σ = 35208000. Its totient is φ = 21124656.

The previous prime is 27872903. The next prime is 27872909. The reversal of 27872905 is 50927872.

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

It is not a de Polignac number, because 27872905 - 2¹ = 27872903 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (27872903) 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, 146605 + ... + 146794.

It is an arithmetic number, because the mean of its divisors is an integer number (4401000).

Almost surely, 2^27872905 is an apocalyptic number.

It is an amenable number.

27872905 is a deficient number, since it is larger than the sum of its proper divisors (7335095).

27872905 is a wasteful number, since it uses less digits than its factorization.

27872905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293423.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 27872905 is about 5279.4796145075. The cubic root of 27872905 is about 303.1987535135.

The spelling of 27872905 in words is "twenty-seven million, eight hundred seventy-two thousand, nine hundred five".