21898348 has 6 divisors (see below), whose sum is σ = 38322116. Its totient is φ = 10949172.

The previous prime is 21898337. The next prime is 21898351. The reversal of 21898348 is 84389812.

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 as a sum of consecutive naturals, namely, 2737290 + ... + 2737297.

Almost surely, 2^21898348 is an apocalyptic number.

It is an amenable number.

21898348 is a deficient number, since it is larger than the sum of its proper divisors (16423768).

21898348 is a wasteful number, since it uses less digits than its factorization.

21898348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5474591 (or 5474589 counting only the distinct ones).

The product of its digits is 110592, while the sum is 43.

The square root of 21898348 is about 4679.5670739931. The cubic root of 21898348 is about 279.7717016624.

The spelling of 21898348 in words is "twenty-one million, eight hundred ninety-eight thousand, three hundred forty-eight".