21327194 has 32 divisors (see below), whose sum is σ = 38102016. Its totient is φ = 8760960.

The previous prime is 21327181. The next prime is 21327199. The reversal of 21327194 is 49172312.

It is not an unprimeable number, because it can be changed into a prime (21327199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67982 + ... + 68294.

It is an arithmetic number, because the mean of its divisors is an integer number (1190688).

Almost surely, 2^21327194 is an apocalyptic number.

21327194 is a deficient number, since it is larger than the sum of its proper divisors (16774822).

21327194 is a wasteful number, since it uses less digits than its factorization.

21327194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510.

The product of its digits is 3024, while the sum is 29.

The square root of 21327194 is about 4618.1375033665. The cubic root of 21327194 is about 277.3179023378.

The spelling of 21327194 in words is "twenty-one million, three hundred twenty-seven thousand, one hundred ninety-four".