27480145 has 32 divisors (see below), whose sum is σ = 41492736. Its totient is φ = 16972800.

The previous prime is 27480119. The next prime is 27480151. The reversal of 27480145 is 54108472.

It is not a de Polignac number, because 27480145 - 2⁵ = 27480113 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52485 + ... + 53005.

It is an arithmetic number, because the mean of its divisors is an integer number (1296648).

Almost surely, 2^27480145 is an apocalyptic number.

It is an amenable number.

27480145 is a deficient number, since it is larger than the sum of its proper divisors (14012591).

27480145 is a wasteful number, since it uses less digits than its factorization.

27480145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 27480145 is about 5242.1507990519. The cubic root of 27480145 is about 301.7678763943.

The spelling of 27480145 in words is "twenty-seven million, four hundred eighty thousand, one hundred forty-five".