21433027 has 16 divisors (see below), whose sum is σ = 27447552. Its totient is φ = 16247520.

The previous prime is 21432991. The next prime is 21433051. The reversal of 21433027 is 72033412.

It is a cyclic number.

It is not a de Polignac number, because 21433027 - 2¹¹ = 21430979 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21432989 and 21433007.

It is not an unprimeable number, because it can be changed into a prime (21433057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913 + ... + 6610.

It is an arithmetic number, because the mean of its divisors is an integer number (1715472).

Almost surely, 2^21433027 is an apocalyptic number.

21433027 is a deficient number, since it is larger than the sum of its proper divisors (6014525).

21433027 is a wasteful number, since it uses less digits than its factorization.

21433027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7578.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 21433027 is about 4629.5817305670. The cubic root of 21433027 is about 277.7758618120.

Adding to 21433027 its reverse (72033412), we get a palindrome (93466439).

The spelling of 21433027 in words is "twenty-one million, four hundred thirty-three thousand, twenty-seven".