19212427 has 6 divisors (see below), whose sum is σ = 20804172. Its totient is φ = 17734392.

The previous prime is 19212421. The next prime is 19212463. The reversal of 19212427 is 72421291.

It is not a de Polignac number, because 19212427 - 2⁷ = 19212299 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19212395 and 19212404.

It is not an unprimeable number, because it can be changed into a prime (19212421) 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, 56673 + ... + 57010.

It is an arithmetic number, because the mean of its divisors is an integer number (3467362).

Almost surely, 2^19212427 is an apocalyptic number.

19212427 is a deficient number, since it is larger than the sum of its proper divisors (1591745).

19212427 is a wasteful number, since it uses less digits than its factorization.

19212427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113709 (or 113696 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 19212427 is about 4383.1982615437. The cubic root of 19212427 is about 267.8309387073.

The spelling of 19212427 in words is "nineteen million, two hundred twelve thousand, four hundred twenty-seven".