21869674 has 8 divisors (see below), whose sum is σ = 32921280. Its totient is φ = 10895916.

The previous prime is 21869669. The next prime is 21869677. The reversal of 21869674 is 47696812.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21869674.

It is not an unprimeable number, because it can be changed into a prime (21869677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18754 + ... + 19885.

It is an arithmetic number, because the mean of its divisors is an integer number (4115160).

Almost surely, 2^21869674 is an apocalyptic number.

21869674 is a deficient number, since it is larger than the sum of its proper divisors (11051606).

21869674 is a wasteful number, since it uses less digits than its factorization.

21869674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38924.

The product of its digits is 145152, while the sum is 43.

The square root of 21869674 is about 4676.5023254565. The cubic root of 21869674 is about 279.6495360121.

The spelling of 21869674 in words is "twenty-one million, eight hundred sixty-nine thousand, six hundred seventy-four".