19422401 has 8 divisors (see below), whose sum is σ = 19815744. Its totient is φ = 19033200.

The previous prime is 19422379. The next prime is 19422443. The reversal of 19422401 is 10422491.

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-19422401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19422451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9470 + ... + 11336.

It is an arithmetic number, because the mean of its divisors is an integer number (2476968).

Almost surely, 2^19422401 is an apocalyptic number.

It is an amenable number.

19422401 is a deficient number, since it is larger than the sum of its proper divisors (393343).

19422401 is a wasteful number, since it uses less digits than its factorization.

19422401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2071.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 19422401 is about 4407.0853179851. The cubic root of 19422401 is about 268.8031201289.

Adding to 19422401 its reverse (10422491), we get a palindrome (29844892).

The spelling of 19422401 in words is "nineteen million, four hundred twenty-two thousand, four hundred one".