19444742 has 16 divisors (see below), whose sum is σ = 30249072. Its totient is φ = 9367680.

The previous prime is 19444741. The next prime is 19444757. The reversal of 19444742 is 24744491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19444741) 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, 5378 + ... + 8234.

It is an arithmetic number, because the mean of its divisors is an integer number (1890567).

Almost surely, 2^19444742 is an apocalyptic number.

19444742 is a deficient number, since it is larger than the sum of its proper divisors (10804330).

19444742 is a wasteful number, since it uses less digits than its factorization.

19444742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2983.

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

The square root of 19444742 is about 4409.6192579405. The cubic root of 19444742 is about 268.9061460009.

The spelling of 19444742 in words is "nineteen million, four hundred forty-four thousand, seven hundred forty-two".