27872946 has 12 divisors (see below), whose sum is σ = 60391422. Its totient is φ = 9290976.

The previous prime is 27872921. The next prime is 27872947. The reversal of 27872946 is 64927872.

It can be written as a sum of positive squares in only one way, i.e., 14630625 + 13242321 = 3825^2 + 3639^2 .

It is a super-2 number, since 2×27872946² = 1553802237437832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27872947) 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 5 ways as a sum of consecutive naturals, for example, 774231 + ... + 774266.

Almost surely, 2^27872946 is an apocalyptic number.

27872946 is an abundant number, since it is smaller than the sum of its proper divisors (32518476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27872946 is a wasteful number, since it uses less digits than its factorization.

27872946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548505 (or 1548502 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 27872946 is about 5279.4834974645. The cubic root of 27872946 is about 303.1989021781.

The spelling of 27872946 in words is "twenty-seven million, eight hundred seventy-two thousand, nine hundred forty-six".