19896807 has 16 divisors (see below), whose sum is σ = 30736640. Its totient is φ = 11212992.

The previous prime is 19896707. The next prime is 19896809. The reversal of 19896807 is 70869891.

It is a happy number.

It is not a de Polignac number, because 19896807 - 2¹² = 19892711 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19896809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4957 + ... + 8022.

It is an arithmetic number, because the mean of its divisors is an integer number (1921040).

Almost surely, 2^19896807 is an apocalyptic number.

19896807 is a deficient number, since it is larger than the sum of its proper divisors (10839833).

19896807 is a wasteful number, since it uses less digits than its factorization.

19896807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13062.

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 19896807 is about 4460.5837061981. The cubic root of 19896807 is about 270.9741082638.

The spelling of 19896807 in words is "nineteen million, eight hundred ninety-six thousand, eight hundred seven".