19427713 has 4 divisors (see below), whose sum is σ = 19485700. Its totient is φ = 19369728.

The previous prime is 19427699. The next prime is 19427717. The reversal of 19427713 is 31772491.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14265729 + 5161984 = 3777^2 + 2272^2 .

It is a cyclic number.

It is not a de Polignac number, because 19427713 - 2⁹ = 19427201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19427717) 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, 28488 + ... + 29161.

It is an arithmetic number, because the mean of its divisors is an integer number (4871425).

Almost surely, 2^19427713 is an apocalyptic number.

It is an amenable number.

19427713 is a deficient number, since it is larger than the sum of its proper divisors (57987).

19427713 is an equidigital number, since it uses as much as digits as its factorization.

19427713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57986.

The product of its digits is 10584, while the sum is 34.

The square root of 19427713 is about 4407.6879426747. The cubic root of 19427713 is about 268.8276236566.

The spelling of 19427713 in words is "nineteen million, four hundred twenty-seven thousand, seven hundred thirteen".