21441614 has 16 divisors (see below), whose sum is σ = 35024400. Its totient is φ = 9805824.

The previous prime is 21441599. The next prime is 21441617. The reversal of 21441614 is 41614412.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21441614.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21441617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8627 + ... + 10830.

It is an arithmetic number, because the mean of its divisors is an integer number (2189025).

Almost surely, 2^21441614 is an apocalyptic number.

21441614 is a deficient number, since it is larger than the sum of its proper divisors (13582786).

21441614 is a wasteful number, since it uses less digits than its factorization.

21441614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19507.

The product of its digits is 768, while the sum is 23.

The square root of 21441614 is about 4630.5090432910. The cubic root of 21441614 is about 277.8129532107.

The spelling of 21441614 in words is "twenty-one million, four hundred forty-one thousand, six hundred fourteen".