21876327 has 12 divisors (see below), whose sum is σ = 34471944. Its totient is φ = 13258320.

The previous prime is 21876319. The next prime is 21876341. The reversal of 21876327 is 72367812.

21876327 is a `hidden beast` number, since 2 + 18 + 7 + 632 + 7 = 666.

It is not a de Polignac number, because 21876327 - 2³ = 21876319 is a prime.

It is a super-3 number, since 3×21876327³ (a number of 23 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 21876291 and 21876300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21876317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110388 + ... + 110585.

It is an arithmetic number, because the mean of its divisors is an integer number (2872662).

Almost surely, 2^21876327 is an apocalyptic number.

21876327 is a deficient number, since it is larger than the sum of its proper divisors (12595617).

21876327 is a wasteful number, since it uses less digits than its factorization.

21876327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220990 (or 220987 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 21876327 is about 4677.2135935833. The cubic root of 21876327 is about 279.6778906450.

The spelling of 21876327 in words is "twenty-one million, eight hundred seventy-six thousand, three hundred twenty-seven".