27481357 has 12 divisors (see below), whose sum is σ = 29192436. Its totient is φ = 25854080.

The previous prime is 27481319. The next prime is 27481369. The reversal of 27481357 is 75318472.

It can be written as a sum of positive squares in 6 ways, for example, as 1887876 + 25593481 = 1374^2 + 5059^2 .

It is not a de Polignac number, because 27481357 - 2¹⁹ = 26957069 is a prime.

It is a super-2 number, since 2×27481357² = 1510449965122898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27431357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34083 + ... + 34879.

It is an arithmetic number, because the mean of its divisors is an integer number (2432703).

Almost surely, 2^27481357 is an apocalyptic number.

It is an amenable number.

27481357 is a deficient number, since it is larger than the sum of its proper divisors (1711079).

27481357 is an equidigital number, since it uses as much as digits as its factorization.

27481357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896 (or 867 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 27481357 is about 5242.2663991827. The cubic root of 27481357 is about 301.7723127766.

The spelling of 27481357 in words is "twenty-seven million, four hundred eighty-one thousand, three hundred fifty-seven".