27872931 has 8 divisors (see below), whose sum is σ = 37581840. Its totient is φ = 18372992.

The previous prime is 27872921. The next prime is 27872947. The reversal of 27872931 is 13927872.

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

It is a cyclic number.

It is not a de Polignac number, because 27872931 - 2¹¹ = 27870883 is a prime.

It is a super-2 number, since 2×27872931² = 1553800565061522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27872931.

It is not an unprimeable number, because it can be changed into a prime (27872921) 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, 51930 + ... + 52463.

It is an arithmetic number, because the mean of its divisors is an integer number (4697730).

Almost surely, 2^27872931 is an apocalyptic number.

27872931 is a deficient number, since it is larger than the sum of its proper divisors (9708909).

27872931 is a wasteful number, since it uses less digits than its factorization.

27872931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104485.

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

The square root of 27872931 is about 5279.4820768708. The cubic root of 27872931 is about 303.1988477886.

The spelling of 27872931 in words is "twenty-seven million, eight hundred seventy-two thousand, nine hundred thirty-one".