21514814 has 8 divisors (see below), whose sum is σ = 32959008. Its totient is φ = 10528480.

The previous prime is 21514807. The next prime is 21514841. The reversal of 21514814 is 41841512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 114347 + ... + 114534.

It is an arithmetic number, because the mean of its divisors is an integer number (4119876).

Almost surely, 2^21514814 is an apocalyptic number.

21514814 is a deficient number, since it is larger than the sum of its proper divisors (11444194).

21514814 is a wasteful number, since it uses less digits than its factorization.

21514814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228930.

The product of its digits is 1280, while the sum is 26.

The square root of 21514814 is about 4638.4064073774. The cubic root of 21514814 is about 278.1287380552.

The spelling of 21514814 in words is "twenty-one million, five hundred fourteen thousand, eight hundred fourteen".