21672883 has 8 divisors (see below), whose sum is σ = 22264560. Its totient is φ = 21088800.

The previous prime is 21672881. The next prime is 21672899. The reversal of 21672883 is 38827612.

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

It is not a de Polignac number, because 21672883 - 2¹ = 21672881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21672881) 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, 4141 + ... + 7777.

It is an arithmetic number, because the mean of its divisors is an integer number (2783070).

Almost surely, 2^21672883 is an apocalyptic number.

21672883 is a deficient number, since it is larger than the sum of its proper divisors (591677).

21672883 is a wasteful number, since it uses less digits than its factorization.

21672883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797.

The product of its digits is 32256, while the sum is 37.

The square root of 21672883 is about 4655.4143746825. The cubic root of 21672883 is about 278.8082125536.

It can be divided in two parts, 216728 and 83, that added together give a triangular number (216811 = T₆₅₈).

The spelling of 21672883 in words is "twenty-one million, six hundred seventy-two thousand, eight hundred eighty-three".