21830027 has 2 divisors, whose sum is σ = 21830028. Its totient is φ = 21830026.

The previous prime is 21829981. The next prime is 21830041. The reversal of 21830027 is 72003812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21830027 - 2¹² = 21825931 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 21829984 and 21830011.

It is not a weakly prime, because it can be changed into another prime (21830087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10915013 + 10915014.

It is an arithmetic number, because the mean of its divisors is an integer number (10915014).

Almost surely, 2^21830027 is an apocalyptic number.

21830027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21830027 is an equidigital number, since it uses as much as digits as its factorization.

21830027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 21830027 is about 4672.2614438835. The cubic root of 21830027 is about 279.4804438428.

Adding to 21830027 its reverse (72003812), we get a palindrome (93833839).

The spelling of 21830027 in words is "twenty-one million, eight hundred thirty thousand, twenty-seven".