27645434 has 16 divisors (see below), whose sum is σ = 44015400. Its totient is φ = 12977664.

The previous prime is 27645433. The next prime is 27645461. The reversal of 27645434 is 43454672.

It can be written as a sum of positive squares in 4 ways, for example, as 16443025 + 11202409 = 4055^2 + 3347^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27645394 and 27645403.

It is not an unprimeable number, because it can be changed into a prime (27645433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18632 + ... + 20060.

Almost surely, 2^27645434 is an apocalyptic number.

27645434 is a deficient number, since it is larger than the sum of its proper divisors (16369966).

27645434 is a wasteful number, since it uses less digits than its factorization.

27645434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017.

The product of its digits is 80640, while the sum is 35.

The square root of 27645434 is about 5257.8925435958. The cubic root of 27645434 is about 302.3716970632.

The spelling of 27645434 in words is "twenty-seven million, six hundred forty-five thousand, four hundred thirty-four".