27430073 has 4 divisors (see below), whose sum is σ = 29923728. Its totient is φ = 24936420.

The previous prime is 27430063. The next prime is 27430079. The reversal of 27430073 is 37003472.

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 not a de Polignac number, because 27430073 - 2⁸ = 27429817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27430079) 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, 1246811 + ... + 1246832.

It is an arithmetic number, because the mean of its divisors is an integer number (7480932).

Almost surely, 2^27430073 is an apocalyptic number.

It is an amenable number.

27430073 is a deficient number, since it is larger than the sum of its proper divisors (2493655).

27430073 is a wasteful number, since it uses less digits than its factorization.

27430073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2493654.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 27430073 is about 5237.3727192171. The cubic root of 27430073 is about 301.5844796440.

The spelling of 27430073 in words is "twenty-seven million, four hundred thirty thousand, seventy-three".