21119104 has 32 divisors (see below), whose sum is σ = 42411600. Its totient is φ = 10474752.

The previous prime is 21119093. The next prime is 21119107. The reversal of 21119104 is 40191112.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (21119107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17199 + ... + 18385.

Almost surely, 2^21119104 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 21119104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21205800).

21119104 is an abundant number, since it is smaller than the sum of its proper divisors (21292496).

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

21119104 is a wasteful number, since it uses less digits than its factorization.

21119104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1340 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 21119104 is about 4595.5526327092. The cubic root of 21119104 is about 276.4130202189.

The spelling of 21119104 in words is "twenty-one million, one hundred nineteen thousand, one hundred four".