19936047 has 8 divisors (see below), whose sum is σ = 27199744. Its totient is φ = 12981528.

The previous prime is 19936043. The next prime is 19936057. The reversal of 19936047 is 74063991.

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

It is not a de Polignac number, because 19936047 - 2² = 19936043 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19935996 and 19936014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19936043) 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, 77143 + ... + 77400.

It is an arithmetic number, because the mean of its divisors is an integer number (3399968).

Almost surely, 2^19936047 is an apocalyptic number.

19936047 is a deficient number, since it is larger than the sum of its proper divisors (7263697).

19936047 is a wasteful number, since it uses less digits than its factorization.

19936047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154589.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 19936047 is about 4464.9800671448. The cubic root of 19936047 is about 271.1521274738.

The spelling of 19936047 in words is "nineteen million, nine hundred thirty-six thousand, forty-seven".