27973028 has 6 divisors (see below), whose sum is σ = 48952806. Its totient is φ = 13986512.

The previous prime is 27973027. The next prime is 27973039. The reversal of 27973028 is 82037972.

It can be written as a sum of positive squares in only one way, i.e., 16467364 + 11505664 = 4058^2 + 3392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27972982 and 27973000.

It is not an unprimeable number, because it can be changed into a prime (27973027) 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 as a sum of consecutive naturals, namely, 3496625 + ... + 3496632.

It is an arithmetic number, because the mean of its divisors is an integer number (8158801).

Almost surely, 2^27973028 is an apocalyptic number.

It is an amenable number.

27973028 is a deficient number, since it is larger than the sum of its proper divisors (20979778).

27973028 is a wasteful number, since it uses less digits than its factorization.

27973028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6993261 (or 6993259 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 27973028 is about 5288.9533936309. The cubic root of 27973028 is about 303.5613624370.

The spelling of 27973028 in words is "twenty-seven million, nine hundred seventy-three thousand, twenty-eight".