19948764 has 48 divisors (see below), whose sum is σ = 51448320. Its totient is φ = 5965440.

The previous prime is 19948763. The next prime is 19948787. The reversal of 19948764 is 46784991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19948763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9472 + ... + 11384.

It is an arithmetic number, because the mean of its divisors is an integer number (1071840).

Almost surely, 2^19948764 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 19948764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25724160).

19948764 is an abundant number, since it is smaller than the sum of its proper divisors (31499556).

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

19948764 is a wasteful number, since it uses less digits than its factorization.

19948764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010 (or 2008 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 19948764 is about 4466.4039226205. The cubic root of 19948764 is about 271.2097702730.

The spelling of 19948764 in words is "nineteen million, nine hundred forty-eight thousand, seven hundred sixty-four".