27228831 has 16 divisors (see below), whose sum is σ = 41616384. Its totient is φ = 15512544.

The previous prime is 27228829. The next prime is 27228841. The reversal of 27228831 is 13882272.

It is not a de Polignac number, because 27228831 - 2¹ = 27228829 is a prime.

It is a super-2 number, since 2×27228831² = 1482818475253122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 27228792 and 27228801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27228811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5941 + ... + 9473.

It is an arithmetic number, because the mean of its divisors is an integer number (2601024).

Almost surely, 2^27228831 is an apocalyptic number.

27228831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

27228831 is a deficient number, since it is larger than the sum of its proper divisors (14387553).

27228831 is a wasteful number, since it uses less digits than its factorization.

27228831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3910.

The product of its digits is 10752, while the sum is 33.

The square root of 27228831 is about 5218.1252380525. The cubic root of 27228831 is about 300.8451391194.

The spelling of 27228831 in words is "twenty-seven million, two hundred twenty-eight thousand, eight hundred thirty-one".