27438453 has 16 divisors (see below), whose sum is σ = 46456960. Its totient is φ = 15679008.

The previous prime is 27438431. The next prime is 27438469. The reversal of 27438453 is 35483472.

It is a happy number.

27438453 is a `hidden beast` number, since 274 + 384 + 5 + 3 = 666.

It is not a de Polignac number, because 27438453 - 2⁸ = 27438197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27438403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72400 + ... + 72777.

It is an arithmetic number, because the mean of its divisors is an integer number (2903560).

Almost surely, 2^27438453 is an apocalyptic number.

It is an amenable number.

27438453 is a deficient number, since it is larger than the sum of its proper divisors (19018507).

27438453 is a wasteful number, since it uses less digits than its factorization.

27438453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145193 (or 145187 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 27438453 is about 5238.1726775661. The cubic root of 27438453 is about 301.6151882829.

The spelling of 27438453 in words is "twenty-seven million, four hundred thirty-eight thousand, four hundred fifty-three".