21848650 has 12 divisors (see below), whose sum is σ = 40638582. Its totient is φ = 8739440.

The previous prime is 21848647. The next prime is 21848653. The reversal of 21848650 is 5684812.

It is an interprime number because it is at equal distance from previous prime (21848647) and next prime (21848653).

It can be written as a sum of positive squares in 3 ways, for example, as 18429849 + 3418801 = 4293^2 + 1849^2 .

It is not an unprimeable number, because it can be changed into a prime (21848653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218437 + ... + 218536.

Almost surely, 2^21848650 is an apocalyptic number.

21848650 is a deficient number, since it is larger than the sum of its proper divisors (18789932).

21848650 is a wasteful number, since it uses less digits than its factorization.

21848650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436985 (or 436980 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 21848650 is about 4674.2539511670. The cubic root of 21848650 is about 279.5598953396.

The spelling of 21848650 in words is "twenty-one million, eight hundred forty-eight thousand, six hundred fifty".