27872139 has 8 divisors (see below), whose sum is σ = 37350400. Its totient is φ = 18487656.

The previous prime is 27872099. The next prime is 27872149. The reversal of 27872139 is 93127872.

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

It is not a de Polignac number, because 27872139 - 2¹¹ = 27870091 is a prime.

It is a super-2 number, since 2×27872139² = 1553712264870642, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27872097 and 27872106.

It is not an unprimeable number, because it can be changed into a prime (27872149) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 22747 + ... + 23940.

It is an arithmetic number, because the mean of its divisors is an integer number (4668800).

Almost surely, 2^27872139 is an apocalyptic number.

27872139 is a deficient number, since it is larger than the sum of its proper divisors (9478261).

27872139 is a wasteful number, since it uses less digits than its factorization.

27872139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46889.

The product of its digits is 42336, while the sum is 39.

The square root of 27872139 is about 5279.4070689804. The cubic root of 27872139 is about 303.1959759968.

The spelling of 27872139 in words is "twenty-seven million, eight hundred seventy-two thousand, one hundred thirty-nine".