21448098 has 64 divisors (see below), whose sum is σ = 56862720. Its totient is φ = 5859216.

The previous prime is 21448079. The next prime is 21448127. The reversal of 21448098 is 89084412.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 31 ways as a sum of consecutive naturals, for example, 7461 + ... + 9927.

It is an arithmetic number, because the mean of its divisors is an integer number (888480).

Almost surely, 2^21448098 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21448098, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28431360).

21448098 is an abundant number, since it is smaller than the sum of its proper divisors (35414622).

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

21448098 is a wasteful number, since it uses less digits than its factorization.

21448098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508 (or 2502 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 21448098 is about 4631.2091293743. The cubic root of 21448098 is about 277.8409541756.

The spelling of 21448098 in words is "twenty-one million, four hundred forty-eight thousand, ninety-eight".