27930245 has 12 divisors (see below), whose sum is σ = 38988684. Its totient is φ = 19152000.

The previous prime is 27930241. The next prime is 27930251. The reversal of 27930245 is 54203972.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14984641 + 12945604 = 3871^2 + 3598^2 .

It is not a de Polignac number, because 27930245 - 2² = 27930241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27930241) 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, 56756 + ... + 57245.

It is an arithmetic number, because the mean of its divisors is an integer number (3249057).

Almost surely, 2^27930245 is an apocalyptic number.

It is an amenable number.

27930245 is a deficient number, since it is larger than the sum of its proper divisors (11058439).

27930245 is a wasteful number, since it uses less digits than its factorization.

27930245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114020 (or 114013 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 27930245 is about 5284.9072839549. The cubic root of 27930245 is about 303.4065240874.

The spelling of 27930245 in words is "twenty-seven million, nine hundred thirty thousand, two hundred forty-five".