21848069 has 8 divisors (see below), whose sum is σ = 22170720. Its totient is φ = 21527856.

The previous prime is 21848063. The next prime is 21848083. The reversal of 21848069 is 96084812.

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

It is a cyclic number.

It is not a de Polignac number, because 21848069 - 2⁴ = 21848053 is a prime.

It is a super-2 number, since 2×21848069² = 954676238057522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21848063) 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, 24302 + ... + 25184.

It is an arithmetic number, because the mean of its divisors is an integer number (2771340).

Almost surely, 2^21848069 is an apocalyptic number.

It is an amenable number.

21848069 is a deficient number, since it is larger than the sum of its proper divisors (322651).

21848069 is a wasteful number, since it uses less digits than its factorization.

21848069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 21848069 is about 4674.1918017985. The cubic root of 21848069 is about 279.5574172957.

The spelling of 21848069 in words is "twenty-one million, eight hundred forty-eight thousand, sixty-nine".