19090442 has 8 divisors (see below), whose sum is σ = 32726496. Its totient is φ = 8181612.

The previous prime is 19090433. The next prime is 19090447. The reversal of 19090442 is 24409091.

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

It is not an unprimeable number, because it can be changed into a prime (19090447) 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, 681788 + ... + 681815.

It is an arithmetic number, because the mean of its divisors is an integer number (4090812).

Almost surely, 2^19090442 is an apocalyptic number.

19090442 is a deficient number, since it is larger than the sum of its proper divisors (13636054).

19090442 is a wasteful number, since it uses less digits than its factorization.

19090442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363612.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 19090442 is about 4369.2610359190. The cubic root of 19090442 is about 267.2628905981.

The spelling of 19090442 in words is "nineteen million, ninety thousand, four hundred forty-two".