21234294 has 24 divisors (see below), whose sum is σ = 46093320. Its totient is φ = 7064928.

The previous prime is 21234281. The next prime is 21234299. The reversal of 21234294 is 49243212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21234299) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16237 + ... + 17495.

It is an arithmetic number, because the mean of its divisors is an integer number (1920555).

Almost surely, 2^21234294 is an apocalyptic number.

21234294 is an abundant number, since it is smaller than the sum of its proper divisors (24859026).

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

21234294 is a wasteful number, since it uses less digits than its factorization.

21234294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204 (or 2201 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 21234294 is about 4608.0683588680. The cubic root of 21234294 is about 276.9146561186.

It can be divided in two parts, 21234 and 294, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 21234294 in words is "twenty-one million, two hundred thirty-four thousand, two hundred ninety-four".