21327174 has 24 divisors (see below), whose sum is σ = 50410152. Its totient is φ = 6462720.

The previous prime is 21327157. The next prime is 21327181. The reversal of 21327174 is 47172312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53659 + ... + 54054.

It is an arithmetic number, because the mean of its divisors is an integer number (2100423).

Almost surely, 2^21327174 is an apocalyptic number.

21327174 is an abundant number, since it is smaller than the sum of its proper divisors (29082978).

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

21327174 is a wasteful number, since it uses less digits than its factorization.

21327174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107732 (or 107729 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 21327174 is about 4618.1353379909. The cubic root of 21327174 is about 277.3178156510.

Adding to 21327174 its reverse (47172312), we get a palindrome (68499486).

The spelling of 21327174 in words is "twenty-one million, three hundred twenty-seven thousand, one hundred seventy-four".