27420872 has 16 divisors (see below), whose sum is σ = 51618060. Its totient is φ = 13656064.

The previous prime is 27420871. The next prime is 27420893. The reversal of 27420872 is 27802472.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26152996 + 1267876 = 5114^2 + 1126^2 .

It is not an unprimeable number, because it can be changed into a prime (27420871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4613 + ... + 8724.

Almost surely, 2^27420872 is an apocalyptic number.

It is an amenable number.

27420872 is a deficient number, since it is larger than the sum of its proper divisors (24197188).

27420872 is a wasteful number, since it uses less digits than its factorization.

27420872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13600 (or 13596 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 27420872 is about 5236.4942471085. The cubic root of 27420872 is about 301.5507552336.

The spelling of 27420872 in words is "twenty-seven million, four hundred twenty thousand, eight hundred seventy-two".