27970443 has 6 divisors (see below), whose sum is σ = 40401764. Its totient is φ = 18646956.

The previous prime is 27970427. The next prime is 27970469. The reversal of 27970443 is 34407972.

It is not a de Polignac number, because 27970443 - 2⁴ = 27970427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27970398 and 27970407.

It is not an unprimeable number, because it can be changed into a prime (27970043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1553905 + ... + 1553922.

Almost surely, 2^27970443 is an apocalyptic number.

27970443 is a deficient number, since it is larger than the sum of its proper divisors (12431321).

27970443 is a wasteful number, since it uses less digits than its factorization.

27970443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3107833 (or 3107830 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 27970443 is about 5288.7090107133. The cubic root of 27970443 is about 303.5520114020.

The spelling of 27970443 in words is "twenty-seven million, nine hundred seventy thousand, four hundred forty-three".