21614070 has 32 divisors (see below), whose sum is σ = 52156512. Its totient is φ = 5732352.

The previous prime is 21614057. The next prime is 21614141. The reversal of 21614070 is 7041612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3924 + ... + 7656.

It is an arithmetic number, because the mean of its divisors is an integer number (1629891).

Almost surely, 2^21614070 is an apocalyptic number.

21614070 is an abundant number, since it is smaller than the sum of its proper divisors (30542442).

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

21614070 is a wasteful number, since it uses less digits than its factorization.

21614070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 21614070 is about 4649.0934600199. The cubic root of 21614070 is about 278.5557864796. Note that the first 3 decimals are identical.

Adding to 21614070 its reverse (7041612), we get a palindrome (28655682).

The spelling of 21614070 in words is "twenty-one million, six hundred fourteen thousand, seventy".