27970707 has 4 divisors (see below), whose sum is σ = 37294280. Its totient is φ = 18647136.

The previous prime is 27970699. The next prime is 27970739. The reversal of 27970707 is 70707972.

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

It is not a de Polignac number, because 27970707 - 2³ = 27970699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27970807) 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, 4661782 + ... + 4661787.

It is an arithmetic number, because the mean of its divisors is an integer number (9323570).

Almost surely, 2^27970707 is an apocalyptic number.

27970707 is a deficient number, since it is larger than the sum of its proper divisors (9323573).

27970707 is an equidigital number, since it uses as much as digits as its factorization.

27970707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9323572.

The product of its (nonzero) digits is 43218, while the sum is 39.

The square root of 27970707 is about 5288.7339694865. The cubic root of 27970707 is about 303.5529664277.

The spelling of 27970707 in words is "twenty-seven million, nine hundred seventy thousand, seven hundred seven".