27452139 has 32 divisors (see below), whose sum is σ = 43545600. Its totient is φ = 15164160.

The previous prime is 27452129. The next prime is 27452141. The reversal of 27452139 is 93125472.

It is not a de Polignac number, because 27452139 - 2¹⁶ = 27386603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (27452129) 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, 37822 + ... + 38540.

It is an arithmetic number, because the mean of its divisors is an integer number (1360800).

Almost surely, 2^27452139 is an apocalyptic number.

27452139 is a deficient number, since it is larger than the sum of its proper divisors (16093461).

27452139 is a wasteful number, since it uses less digits than its factorization.

27452139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835.

The product of its digits is 15120, while the sum is 33.

The square root of 27452139 is about 5239.4788863016. The cubic root of 27452139 is about 301.6653273989.

It can be divided in two parts, 2745 and 2139, that added together give a palindrome (4884).

The spelling of 27452139 in words is "twenty-seven million, four hundred fifty-two thousand, one hundred thirty-nine".