21198848 has 48 divisors (see below), whose sum is σ = 46289880. Its totient is φ = 9625600.

The previous prime is 21198839. The next prime is 21198857. The reversal of 21198848 is 84889112.

It is an interprime number because it is at equal distance from previous prime (21198839) and next prime (21198857).

It is a congruent number.

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, 22058 + ... + 22998.

Almost surely, 2^21198848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21198848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23144940).

21198848 is an abundant number, since it is smaller than the sum of its proper divisors (25091032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21198848 is an equidigital number, since it uses as much as digits as its factorization.

21198848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 954 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The square root of 21198848 is about 4604.2206723831. The cubic root of 21198848 is about 276.7604875271.

The spelling of 21198848 in words is "twenty-one million, one hundred ninety-eight thousand, eight hundred forty-eight".