27434 has 16 divisors (see below), whose sum is σ = 47520. Its totient is φ = 11760.

The previous prime is 27431. The next prime is 27437. The reversal of 27434 is 43472.

27434 = T₁₂ + T₁₃ + ... + T₅₄.

27434 = 1² + 2² + ... + 43².

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (27431) and next prime (27437).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (27431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617 + ... + 659.

It is an arithmetic number, because the mean of its divisors is an integer number (2970).

2²⁷⁴³⁴ is an apocalyptic number.

27434 is a deficient number, since it is larger than the sum of its proper divisors (20086).

27434 is a wasteful number, since it uses less digits than its factorization.

27434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85.

The product of its digits is 672, while the sum is 20.

The square root of 27434 is about 165.6321224884. The cubic root of 27434 is about 30.1598870974.

Subtracting from 27434 its product of digits (672), we obtain a palindrome (26762).

It can be divided in two parts, 274 and 34, that multiplied together give a triangular number (9316 = T₁₃₆).

The spelling of 27434 in words is "twenty-seven thousand, four hundred thirty-four".