21848830 has 16 divisors (see below), whose sum is σ = 39883104. Its totient is φ = 8616160.

The previous prime is 21848809. The next prime is 21848857. The reversal of 21848830 is 3884812.

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, 14677 + ... + 16096.

It is an arithmetic number, because the mean of its divisors is an integer number (2492694).

Almost surely, 2^21848830 is an apocalyptic number.

21848830 is a deficient number, since it is larger than the sum of its proper divisors (18034274).

21848830 is a wasteful number, since it uses less digits than its factorization.

21848830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30851.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 21848830 is about 4674.2732055369. The cubic root of 21848830 is about 279.5606630551.

The spelling of 21848830 in words is "twenty-one million, eight hundred forty-eight thousand, eight hundred thirty".