21341104 has 20 divisors (see below), whose sum is σ = 43525240. Its totient is φ = 10108800.

The previous prime is 21341093. The next prime is 21341141. The reversal of 21341104 is 40114312.

It is a Harshad number since it is a multiple of its sum of digits (16).

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 3 ways as a sum of consecutive naturals, for example, 34797 + ... + 35404.

It is an arithmetic number, because the mean of its divisors is an integer number (2176262).

Almost surely, 2^21341104 is an apocalyptic number.

It is an amenable number.

21341104 is an abundant number, since it is smaller than the sum of its proper divisors (22184136).

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

21341104 is a wasteful number, since it uses less digits than its factorization.

21341104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70228 (or 70222 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 21341104 is about 4619.6432762714. The cubic root of 21341104 is about 277.3781798984.

Adding to 21341104 its reverse (40114312), we get a palindrome (61455416).

The spelling of 21341104 in words is "twenty-one million, three hundred forty-one thousand, one hundred four".