19764196 has 24 divisors (see below), whose sum is σ = 36328320. Its totient is φ = 9395232.

The previous prime is 19764193. The next prime is 19764211. The reversal of 19764196 is 69146791.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19764193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6501 + ... + 9043.

It is an arithmetic number, because the mean of its divisors is an integer number (1513680).

Almost surely, 2^19764196 is an apocalyptic number.

It is an amenable number.

19764196 is a deficient number, since it is larger than the sum of its proper divisors (16564124).

19764196 is a wasteful number, since it uses less digits than its factorization.

19764196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2643 (or 2641 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 19764196 is about 4445.6940965388. The cubic root of 19764196 is about 270.3707572277.

The spelling of 19764196 in words is "nineteen million, seven hundred sixty-four thousand, one hundred ninety-six".