21814701 has 8 divisors (see below), whose sum is σ = 29413440. Its totient is φ = 14379552.

The previous prime is 21814633. The next prime is 21814703. The reversal of 21814701 is 10741812.

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

It is not a de Polignac number, because 21814701 - 2²¹ = 19717549 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21814703) 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, 40585 + ... + 41118.

It is an arithmetic number, because the mean of its divisors is an integer number (3676680).

Almost surely, 2^21814701 is an apocalyptic number.

It is an amenable number.

21814701 is a deficient number, since it is larger than the sum of its proper divisors (7598739).

21814701 is an equidigital number, since it uses as much as digits as its factorization.

21814701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81795.

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 21814701 is about 4670.6210507811. The cubic root of 21814701 is about 279.4150244695.

The spelling of 21814701 in words is "twenty-one million, eight hundred fourteen thousand, seven hundred one".