19422427 has 8 divisors (see below), whose sum is σ = 20552400. Its totient is φ = 18303264.

The previous prime is 19422379. The next prime is 19422443. The reversal of 19422427 is 72422491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19422427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19422457) 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 7 ways as a sum of consecutive naturals, for example, 1149 + ... + 6337.

It is an arithmetic number, because the mean of its divisors is an integer number (2569050).

Almost surely, 2^19422427 is an apocalyptic number.

19422427 is a deficient number, since it is larger than the sum of its proper divisors (1129973).

19422427 is a wasteful number, since it uses less digits than its factorization.

19422427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5405.

The product of its digits is 8064, while the sum is 31.

The square root of 19422427 is about 4407.0882677795. The cubic root of 19422427 is about 268.8032400743.

The spelling of 19422427 in words is "nineteen million, four hundred twenty-two thousand, four hundred twenty-seven".