27078073 has 4 divisors (see below), whose sum is σ = 29539728. Its totient is φ = 24616420.

The previous prime is 27078067. The next prime is 27078091. The reversal of 27078073 is 37087072.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27078073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27078053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230811 + ... + 1230832.

It is an arithmetic number, because the mean of its divisors is an integer number (7384932).

Almost surely, 2^27078073 is an apocalyptic number.

It is an amenable number.

27078073 is a deficient number, since it is larger than the sum of its proper divisors (2461655).

27078073 is a wasteful number, since it uses less digits than its factorization.

27078073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461654.

The product of its (nonzero) digits is 16464, while the sum is 34.

The square root of 27078073 is about 5203.6595776434. The cubic root of 27078073 is about 300.2888809959.

The spelling of 27078073 in words is "twenty-seven million, seventy-eight thousand, seventy-three".