21614086 has 16 divisors (see below), whose sum is σ = 35128800. Its totient is φ = 9973704.

The previous prime is 21614057. The next prime is 21614141. The reversal of 21614086 is 68041612.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1935 + ... + 6853.

It is an arithmetic number, because the mean of its divisors is an integer number (2195550).

Almost surely, 2^21614086 is an apocalyptic number.

21614086 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

21614086 is a deficient number, since it is larger than the sum of its proper divisors (13514714).

21614086 is an equidigital number, since it uses as much as digits as its factorization.

21614086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960 (or 4934 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 21614086 is about 4649.0951807852. The cubic root of 21614086 is about 278.5558552141. Note that the first 3 decimals are identical.

Adding to 21614086 its reverse (68041612), we get a palindrome (89655698).

The spelling of 21614086 in words is "twenty-one million, six hundred fourteen thousand, eighty-six".