21344814 has 12 divisors (see below), whose sum is σ = 46247136. Its totient is φ = 7114932.

The previous prime is 21344803. The next prime is 21344821. The reversal of 21344814 is 41844312.

21344814 is a `hidden beast` number, since 213 + 448 + 1 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 592894 + ... + 592929.

It is an arithmetic number, because the mean of its divisors is an integer number (3853928).

Almost surely, 2^21344814 is an apocalyptic number.

21344814 is an abundant number, since it is smaller than the sum of its proper divisors (24902322).

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

21344814 is a wasteful number, since it uses less digits than its factorization.

21344814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185831 (or 1185828 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 21344814 is about 4620.0448049775. The cubic root of 21344814 is about 277.3942523787.

The spelling of 21344814 in words is "twenty-one million, three hundred forty-four thousand, eight hundred fourteen".