27470189 has 4 divisors (see below), whose sum is σ = 27622140. Its totient is φ = 27318240.

The previous prime is 27470167. The next prime is 27470197. The reversal of 27470189 is 98107472.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12709225 + 14760964 = 3565^2 + 3842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27470189 is a prime.

It is a super-2 number, since 2×27470189² = 1509222567391442, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27470389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75704 + ... + 76065.

It is an arithmetic number, because the mean of its divisors is an integer number (6905535).

Almost surely, 2^27470189 is an apocalyptic number.

It is an amenable number.

27470189 is a deficient number, since it is larger than the sum of its proper divisors (151951).

27470189 is a wasteful number, since it uses less digits than its factorization.

27470189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151950.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 27470189 is about 5241.2011028008. The cubic root of 27470189 is about 301.7314286987.

The spelling of 27470189 in words is "twenty-seven million, four hundred seventy thousand, one hundred eighty-nine".