19827742 has 16 divisors (see below), whose sum is σ = 32752512. Its totient is φ = 8927320.

The previous prime is 19827739. The next prime is 19827761. The reversal of 19827742 is 24772891.

It is a junction number, because it is equal to n+sod(n) for n = 19827695 and 19827704.

It is a congruent number.

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, 1858 + ... + 6565.

It is an arithmetic number, because the mean of its divisors is an integer number (2047032).

Almost surely, 2^19827742 is an apocalyptic number.

19827742 is a deficient number, since it is larger than the sum of its proper divisors (12924770).

19827742 is a wasteful number, since it uses less digits than its factorization.

19827742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8543.

The product of its digits is 56448, while the sum is 40.

The square root of 19827742 is about 4452.8352765401. The cubic root of 19827742 is about 270.6602132974.

The spelling of 19827742 in words is "nineteen million, eight hundred twenty-seven thousand, seven hundred forty-two".