21104034 has 32 divisors (see below), whose sum is σ = 49268736. Its totient is φ = 5900880.

The previous prime is 21104033. The next prime is 21104059. The reversal of 21104034 is 43040112.

It is not an unprimeable number, because it can be changed into a prime (21104033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3372 + ... + 7319.

It is an arithmetic number, because the mean of its divisors is an integer number (1539648).

Almost surely, 2^21104034 is an apocalyptic number.

21104034 is an abundant number, since it is smaller than the sum of its proper divisors (28164702).

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

21104034 is a wasteful number, since it uses less digits than its factorization.

21104034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10750.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21104034 is about 4593.9127114041. The cubic root of 21104034 is about 276.3472577160.

Adding to 21104034 its reverse (43040112), we get a palindrome (64144146).

The spelling of 21104034 in words is "twenty-one million, one hundred four thousand, thirty-four".