19764892 has 48 divisors (see below), whose sum is σ = 41469120. Its totient is φ = 8064000.

The previous prime is 19764869. The next prime is 19764893. The reversal of 19764892 is 29846791.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19764893) 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 15 ways as a sum of consecutive naturals, for example, 81892 + ... + 82132.

It is an arithmetic number, because the mean of its divisors is an integer number (863940).

Almost surely, 2^19764892 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19764892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20734560).

19764892 is an abundant number, since it is smaller than the sum of its proper divisors (21704228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19764892 is a wasteful number, since it uses less digits than its factorization.

19764892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382 (or 380 counting only the distinct ones).

The product of its digits is 217728, while the sum is 46.

The square root of 19764892 is about 4445.7723738401. The cubic root of 19764892 is about 270.3739309100.

The spelling of 19764892 in words is "nineteen million, seven hundred sixty-four thousand, eight hundred ninety-two".