21427062 has 16 divisors (see below), whose sum is σ = 43008960. Its totient is φ = 7116552.

The previous prime is 21427039. The next prime is 21427073. The reversal of 21427062 is 26072412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4612 + ... + 8007.

It is an arithmetic number, because the mean of its divisors is an integer number (2688060).

Almost surely, 2^21427062 is an apocalyptic number.

21427062 is an abundant number, since it is smaller than the sum of its proper divisors (21581898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21427062 is a wasteful number, since it uses less digits than its factorization.

21427062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12907.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 21427062 is about 4628.9374590720. The cubic root of 21427062 is about 277.7500902655.

Adding to 21427062 its reverse (26072412), we get a palindrome (47499474).

The spelling of 21427062 in words is "twenty-one million, four hundred twenty-seven thousand, sixty-two".