21614056 has 16 divisors (see below), whose sum is σ = 40602240. Its totient is φ = 10786800.

The previous prime is 21614029. The next prime is 21614057. The reversal of 21614056 is 65041612.

It is a super-2 number, since 2×21614056² = 934334833542272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21614056.

It is not an unprimeable number, because it can be changed into a prime (21614057) 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 3 ways as a sum of consecutive naturals, for example, 2631 + ... + 7081.

It is an arithmetic number, because the mean of its divisors is an integer number (2537640).

Almost surely, 2^21614056 is an apocalyptic number.

It is an amenable number.

21614056 is a deficient number, since it is larger than the sum of its proper divisors (18988184).

21614056 is a wasteful number, since it uses less digits than its factorization.

21614056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5064 (or 5060 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 21614056 is about 4649.0919543498. The cubic root of 21614056 is about 278.5557263370. Note that the first 3 decimals are identical.

Adding to 21614056 its reverse (65041612), we get a palindrome (86655668).

The spelling of 21614056 in words is "twenty-one million, six hundred fourteen thousand, fifty-six".