27786045 has 32 divisors (see below), whose sum is σ = 51777792. Its totient is φ = 12460032.

The previous prime is 27785983. The next prime is 27786061. The reversal of 27786045 is 54068772.

It is not a de Polignac number, because 27786045 - 2¹¹ = 27783997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27785994 and 27786012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3069 + ... + 8061.

It is an arithmetic number, because the mean of its divisors is an integer number (1618056).

Almost surely, 2^27786045 is an apocalyptic number.

It is an amenable number.

27786045 is a deficient number, since it is larger than the sum of its proper divisors (23991747).

27786045 is a wasteful number, since it uses less digits than its factorization.

27786045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061.

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 27786045 is about 5271.2470061647. The cubic root of 27786045 is about 302.8834742380.

The spelling of 27786045 in words is "twenty-seven million, seven hundred eighty-six thousand, forty-five".