27128245 has 8 divisors (see below), whose sum is σ = 32858784. Its totient is φ = 21499344.

The previous prime is 27128221. The next prime is 27128251. The reversal of 27128245 is 54282172.

27128245 = T₁₁ + T₁₂ + ... + T₅₄₅.

It is a happy number.

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 27128245 - 2⁷ = 27128117 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 24819 + ... + 25888.

It is an arithmetic number, because the mean of its divisors is an integer number (4107348).

Almost surely, 2^27128245 is an apocalyptic number.

It is an amenable number.

27128245 is a deficient number, since it is larger than the sum of its proper divisors (5730539).

27128245 is a wasteful number, since it uses less digits than its factorization.

27128245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50819.

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

The square root of 27128245 is about 5208.4781846524. The cubic root of 27128245 is about 300.4742314350.

The spelling of 27128245 in words is "twenty-seven million, one hundred twenty-eight thousand, two hundred forty-five".