21060027 has 16 divisors (see below), whose sum is σ = 31790880. Its totient is φ = 13774176.

The previous prime is 21060023. The next prime is 21060049. The reversal of 21060027 is 72006012.

It is a happy number.

It is not a de Polignac number, because 21060027 - 2² = 21060023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21059991 and 21060009.

It is not an unprimeable number, because it can be changed into a prime (21060023) 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 15 ways as a sum of consecutive naturals, for example, 5928 + ... + 8789.

It is an arithmetic number, because the mean of its divisors is an integer number (1986930).

Almost surely, 2^21060027 is an apocalyptic number.

21060027 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

21060027 is a deficient number, since it is larger than the sum of its proper divisors (10730853).

21060027 is a wasteful number, since it uses less digits than its factorization.

21060027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14779 (or 14773 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 21060027 is about 4589.1205039746. The cubic root of 21060027 is about 276.1550404904.

Adding to 21060027 its reverse (72006012), we get a palindrome (93066039).

The spelling of 21060027 in words is "twenty-one million, sixty thousand, twenty-seven".