21482248 has 16 divisors (see below), whose sum is σ = 40940460. Its totient is φ = 10564800.

The previous prime is 21482239. The next prime is 21482267. The reversal of 21482248 is 84228412.

It can be written as a sum of positive squares in 2 ways, for example, as 18992164 + 2490084 = 4358^2 + 1578^2 .

It is a super-3 number, since 3×21482248³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 21523 + ... + 22498.

Almost surely, 2^21482248 is an apocalyptic number.

It is an amenable number.

21482248 is a deficient number, since it is larger than the sum of its proper divisors (19458212).

21482248 is a wasteful number, since it uses less digits than its factorization.

21482248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44088 (or 44084 counting only the distinct ones).

The product of its digits is 8192, while the sum is 31.

The square root of 21482248 is about 4634.8946050585. The cubic root of 21482248 is about 277.9883368983.

The spelling of 21482248 in words is "twenty-one million, four hundred eighty-two thousand, two hundred forty-eight".