28636627 has 2 divisors, whose sum is σ = 28636628. Its totient is φ = 28636626.

The previous prime is 28636603. The next prime is 28636639. The reversal of 28636627 is 72663682.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28636627 - 2⁷ = 28636499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28636627.

It is not a weakly prime, because it can be changed into another prime (28637627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14318313 + 14318314.

It is an arithmetic number, because the mean of its divisors is an integer number (14318314).

Almost surely, 2^28636627 is an apocalyptic number.

28636627 is a deficient number, since it is larger than the sum of its proper divisors (1).

28636627 is an equidigital number, since it uses as much as digits as its factorization.

28636627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 40.

The square root of 28636627 is about 5351.3201175037. The cubic root of 28636627 is about 305.9430704180.

The spelling of 28636627 in words is "twenty-eight million, six hundred thirty-six thousand, six hundred twenty-seven".