20149027 has 2 divisors, whose sum is σ = 20149028. Its totient is φ = 20149026.

The previous prime is 20149021. The next prime is 20149037. The reversal of 20149027 is 72094102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20149027 - 2⁷ = 20148899 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20148992 and 20149010.

It is not a weakly prime, because it can be changed into another prime (20149021) 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, 10074513 + 10074514.

It is an arithmetic number, because the mean of its divisors is an integer number (10074514).

Almost surely, 2^20149027 is an apocalyptic number.

20149027 is a deficient number, since it is larger than the sum of its proper divisors (1).

20149027 is an equidigital number, since it uses as much as digits as its factorization.

20149027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20149027 is about 4488.7667571394. The cubic root of 20149027 is about 272.1142965080.

The spelling of 20149027 in words is "twenty million, one hundred forty-nine thousand, twenty-seven".