27145427 has 16 divisors (see below), whose sum is σ = 28807680. Its totient is φ = 25552800.

The previous prime is 27145423. The next prime is 27145477. The reversal of 27145427 is 72454172.

It is a cyclic number.

It is not a de Polignac number, because 27145427 - 2² = 27145423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27145393 and 27145402.

It is not an unprimeable number, because it can be changed into a prime (27145423) 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, 207152 + ... + 207282.

It is an arithmetic number, because the mean of its divisors is an integer number (1800480).

Almost surely, 2^27145427 is an apocalyptic number.

27145427 is a deficient number, since it is larger than the sum of its proper divisors (1662253).

27145427 is a wasteful number, since it uses less digits than its factorization.

27145427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314.

The product of its digits is 15680, while the sum is 32.

The square root of 27145427 is about 5210.1273496912. The cubic root of 27145427 is about 300.5376543688.

Adding to 27145427 its reverse (72454172), we get a palindrome (99599599).

It can be divided in two parts, 27145 and 427, that added together give a palindrome (27572).

The spelling of 27145427 in words is "twenty-seven million, one hundred forty-five thousand, four hundred twenty-seven".