28704627 has 24 divisors (see below), whose sum is σ = 47536736. Its totient is φ = 16350336.

The previous prime is 28704601. The next prime is 28704629. The reversal of 28704627 is 72640782.

28704627 is a `hidden beast` number, since 28 + 7 + 0 + 4 + 627 = 666.

It is not a de Polignac number, because 28704627 - 2⁸ = 28704371 is a prime.

It is a super-2 number, since 2×28704627² = 1647911222418258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28704591 and 28704600.

It is not an unprimeable number, because it can be changed into a prime (28704629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28293 + ... + 29289.

Almost surely, 2^28704627 is an apocalyptic number.

28704627 is a deficient number, since it is larger than the sum of its proper divisors (18832109).

28704627 is a wasteful number, since it uses less digits than its factorization.

28704627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467 (or 1464 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 28704627 is about 5357.6699226436. The cubic root of 28704627 is about 306.1850412274.

The spelling of 28704627 in words is "twenty-eight million, seven hundred four thousand, six hundred twenty-seven".