21544714 has 8 divisors (see below), whose sum is σ = 32637348. Its totient is φ = 10665600.

The previous prime is 21544673. The next prime is 21544723. The reversal of 21544714 is 41744512.

It can be written as a sum of positive squares in 2 ways, for example, as 15468489 + 6076225 = 3933^2 + 2465^2 .

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

It is a super-3 number, since 3×21544714³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53127 + ... + 53530.

Almost surely, 2^21544714 is an apocalyptic number.

21544714 is a deficient number, since it is larger than the sum of its proper divisors (11092634).

21544714 is a wasteful number, since it uses less digits than its factorization.

21544714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106760.

The product of its digits is 4480, while the sum is 28.

The square root of 21544714 is about 4641.6283780587. The cubic root of 21544714 is about 278.2575206366.

The spelling of 21544714 in words is "twenty-one million, five hundred forty-four thousand, seven hundred fourteen".