19727942 has 8 divisors (see below), whose sum is σ = 31868256. Its totient is φ = 9105192.

The previous prime is 19727933. The next prime is 19727977. The reversal of 19727942 is 24972791.

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

It is a self number, because there is not a number n which added to its sum of digits gives 19727942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379358 + ... + 379409.

It is an arithmetic number, because the mean of its divisors is an integer number (3983532).

Almost surely, 2^19727942 is an apocalyptic number.

19727942 is a deficient number, since it is larger than the sum of its proper divisors (12140314).

19727942 is a wasteful number, since it uses less digits than its factorization.

19727942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758782.

The product of its digits is 63504, while the sum is 41.

The square root of 19727942 is about 4441.6147964451. The cubic root of 19727942 is about 270.2053399091.

The spelling of 19727942 in words is "nineteen million, seven hundred twenty-seven thousand, nine hundred forty-two".