21048834 has 8 divisors (see below), whose sum is σ = 42097680. Its totient is φ = 7016276.

The previous prime is 21048829. The next prime is 21048857. The reversal of 21048834 is 43884012.

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

21048834 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754064 + ... + 1754075.

It is an arithmetic number, because the mean of its divisors is an integer number (5262210).

Almost surely, 2^21048834 is an apocalyptic number.

21048834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21048834 is a wasteful number, since it uses less digits than its factorization.

21048834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508144.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 21048834 is about 4587.9008271758. The cubic root of 21048834 is about 276.1061081198.

The spelling of 21048834 in words is "twenty-one million, forty-eight thousand, eight hundred thirty-four".