21347414 has 16 divisors (see below), whose sum is σ = 35053776. Its totient is φ = 9669600.

The previous prime is 21347371. The next prime is 21347419. The reversal of 21347414 is 41474312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21347419) 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 7 ways as a sum of consecutive naturals, for example, 5444 + ... + 8504.

It is an arithmetic number, because the mean of its divisors is an integer number (2190861).

Almost surely, 2^21347414 is an apocalyptic number.

21347414 is a deficient number, since it is larger than the sum of its proper divisors (13706362).

21347414 is a wasteful number, since it uses less digits than its factorization.

21347414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391.

The product of its digits is 2688, while the sum is 26.

The square root of 21347414 is about 4620.3261789618. The cubic root of 21347414 is about 277.4055150016.

The spelling of 21347414 in words is "twenty-one million, three hundred forty-seven thousand, four hundred fourteen".