27913345 has 8 divisors (see below), whose sum is σ = 33575976. Its totient is φ = 22277376.

The previous prime is 27913297. The next prime is 27913357. The reversal of 27913345 is 54331972.

27913345 = 5² + 6² + ... + 437².

It can be written as a sum of positive squares in 4 ways, for example, as 633616 + 27279729 = 796^2 + 5223^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27913345 - 2⁷ = 27913217 is a prime.

It is a super-3 number, since 3×27913345³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27913345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4282 + ... + 8611.

It is an arithmetic number, because the mean of its divisors is an integer number (4196997).

Almost surely, 2^27913345 is an apocalyptic number.

It is an amenable number.

27913345 is a deficient number, since it is larger than the sum of its proper divisors (5662631).

27913345 is a wasteful number, since it uses less digits than its factorization.

27913345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13331.

The product of its digits is 22680, while the sum is 34.

The square root of 27913345 is about 5283.3081492565. The cubic root of 27913345 is about 303.3453167856.

The spelling of 27913345 in words is "twenty-seven million, nine hundred thirteen thousand, three hundred forty-five".