27628947 has 6 divisors (see below), whose sum is σ = 39908492. Its totient is φ = 18419292.

The previous prime is 27628897. The next prime is 27628949. The reversal of 27628947 is 74982672.

It is not a de Polignac number, because 27628947 - 2⁶ = 27628883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27628949) 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, 1534933 + ... + 1534950.

Almost surely, 2^27628947 is an apocalyptic number.

27628947 is a deficient number, since it is larger than the sum of its proper divisors (12279545).

27628947 is a wasteful number, since it uses less digits than its factorization.

27628947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069889 (or 3069886 counting only the distinct ones).

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

The square root of 27628947 is about 5256.3244762857. The cubic root of 27628947 is about 302.3115763032.

The spelling of 27628947 in words is "twenty-seven million, six hundred twenty-eight thousand, nine hundred forty-seven".