19447442 has 16 divisors (see below), whose sum is σ = 33432000. Its totient is φ = 8311248.

The previous prime is 19447427. The next prime is 19447457. The reversal of 19447442 is 24474491.

It is an interprime number because it is at equal distance from previous prime (19447427) and next prime (19447457).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3809 + ... + 7307.

It is an arithmetic number, because the mean of its divisors is an integer number (2089500).

Almost surely, 2^19447442 is an apocalyptic number.

19447442 is a deficient number, since it is larger than the sum of its proper divisors (13984558).

19447442 is a wasteful number, since it uses less digits than its factorization.

19447442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3905.

The product of its digits is 32256, while the sum is 35.

The square root of 19447442 is about 4409.9253961944. The cubic root of 19447442 is about 268.9185917474.

The spelling of 19447442 in words is "nineteen million, four hundred forty-seven thousand, four hundred forty-two".