27421172 has 6 divisors (see below), whose sum is σ = 47987058. Its totient is φ = 13710584.

The previous prime is 27421171. The next prime is 27421183. The reversal of 27421172 is 27112472.

It can be written as a sum of positive squares in only one way, i.e., 27415696 + 5476 = 5236^2 + 74^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27421171) 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 as a sum of consecutive naturals, namely, 3427643 + ... + 3427650.

It is an arithmetic number, because the mean of its divisors is an integer number (7997843).

Almost surely, 2^27421172 is an apocalyptic number.

It is an amenable number.

27421172 is a deficient number, since it is larger than the sum of its proper divisors (20565886).

27421172 is a wasteful number, since it uses less digits than its factorization.

27421172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6855297 (or 6855295 counting only the distinct ones).

The product of its digits is 1568, while the sum is 26.

The square root of 27421172 is about 5236.5228921489. The cubic root of 27421172 is about 301.5518549421.

The spelling of 27421172 in words is "twenty-seven million, four hundred twenty-one thousand, one hundred seventy-two".