21734112 has 24 divisors (see below), whose sum is σ = 57052296. Its totient is φ = 7244672.

The previous prime is 21734099. The next prime is 21734113. The reversal of 21734112 is 21143712.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×21734112³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21734113) by changing a digit.

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, 113103 + ... + 113294.

It is an arithmetic number, because the mean of its divisors is an integer number (2377179).

Almost surely, 2^21734112 is an apocalyptic number.

It is an amenable number.

21734112 is an abundant number, since it is smaller than the sum of its proper divisors (35318184).

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

21734112 is a wasteful number, since it uses less digits than its factorization.

21734112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226410 (or 226402 counting only the distinct ones).

The product of its digits is 336, while the sum is 21.

The square root of 21734112 is about 4661.9858429643. The cubic root of 21734112 is about 279.0705234036.

Adding to 21734112 its reverse (21143712), we get a palindrome (42877824).

The spelling of 21734112 in words is "twenty-one million, seven hundred thirty-four thousand, one hundred twelve".