19072642 has 4 divisors (see below), whose sum is σ = 28608966. Its totient is φ = 9536320.

The previous prime is 19072631. The next prime is 19072661. The reversal of 19072642 is 24627091.

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

It can be written as a sum of positive squares in only one way, i.e., 11895601 + 7177041 = 3449^2 + 2679^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4768159 + ... + 4768162.

Almost surely, 2^19072642 is an apocalyptic number.

19072642 is a deficient number, since it is larger than the sum of its proper divisors (9536324).

19072642 is an equidigital number, since it uses as much as digits as its factorization.

19072642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9536323.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 19072642 is about 4367.2236031603. The cubic root of 19072642 is about 267.1797991260.

The spelling of 19072642 in words is "nineteen million, seventy-two thousand, six hundred forty-two".