21148352 has 28 divisors (see below), whose sum is σ = 42114216. Its totient is φ = 10536960.

The previous prime is 21148343. The next prime is 21148363. The reversal of 21148352 is 25384112.

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, 31088 + ... + 31760.

Almost surely, 2^21148352 is an apocalyptic number.

It is an amenable number.

21148352 is a deficient number, since it is larger than the sum of its proper divisors (20965864).

21148352 is an equidigital number, since it uses as much as digits as its factorization.

21148352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176 (or 1166 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 21148352 is about 4598.7337387590. The cubic root of 21148352 is about 276.5405634893.

The spelling of 21148352 in words is "twenty-one million, one hundred forty-eight thousand, three hundred fifty-two".