21296093 has 32 divisors (see below), whose sum is σ = 28089600. Its totient is φ = 15676416.

The previous prime is 21296083. The next prime is 21296111. The reversal of 21296093 is 39069212.

It is not a de Polignac number, because 21296093 - 2⁸ = 21295837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21296083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188405 + ... + 188517.

It is an arithmetic number, because the mean of its divisors is an integer number (877800).

Almost surely, 2^21296093 is an apocalyptic number.

It is an amenable number.

21296093 is a deficient number, since it is larger than the sum of its proper divisors (6793507).

21296093 is a wasteful number, since it uses less digits than its factorization.

21296093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 21296093 is about 4614.7690083037. The cubic root of 21296093 is about 277.1830344634.

The spelling of 21296093 in words is "twenty-one million, two hundred ninety-six thousand, ninety-three".