21198483 has 8 divisors (see below), whose sum is σ = 31405200. Its totient is φ = 14132304.

The previous prime is 21198427. The next prime is 21198487. The reversal of 21198483 is 38489112.

It is not a de Polignac number, because 21198483 - 2¹² = 21194387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21198487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392538 + ... + 392591.

It is an arithmetic number, because the mean of its divisors is an integer number (3925650).

Almost surely, 2^21198483 is an apocalyptic number.

21198483 is a deficient number, since it is larger than the sum of its proper divisors (10206717).

21198483 is an equidigital number, since it uses as much as digits as its factorization.

21198483 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785138 (or 785132 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 21198483 is about 4604.1810346684. The cubic root of 21198483 is about 276.7588991050.

The spelling of 21198483 in words is "twenty-one million, one hundred ninety-eight thousand, four hundred eighty-three".