21829486 has 16 divisors (see below), whose sum is σ = 37642464. Its totient is φ = 9300384.

The previous prime is 21829477. The next prime is 21829501. The reversal of 21829486 is 68492812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2085 + ... + 6928.

It is an arithmetic number, because the mean of its divisors is an integer number (2352654).

Almost surely, 2^21829486 is an apocalyptic number.

21829486 is a deficient number, since it is larger than the sum of its proper divisors (15812978).

21829486 is a wasteful number, since it uses less digits than its factorization.

21829486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9195.

The product of its digits is 55296, while the sum is 40.

The square root of 21829486 is about 4672.2035486481. The cubic root of 21829486 is about 279.4781350936.

The spelling of 21829486 in words is "twenty-one million, eight hundred twenty-nine thousand, four hundred eighty-six".