20319828 has 24 divisors (see below), whose sum is σ = 50202432. Its totient is φ = 6374784.

The previous prime is 20319823. The next prime is 20319853. The reversal of 20319828 is 82891302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20319821) 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 7 ways as a sum of consecutive naturals, for example, 49600 + ... + 50007.

It is an arithmetic number, because the mean of its divisors is an integer number (2091768).

Almost surely, 2^20319828 is an apocalyptic number.

It is an amenable number.

20319828 is an abundant number, since it is smaller than the sum of its proper divisors (29882604).

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

20319828 is a wasteful number, since it uses less digits than its factorization.

20319828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99631 (or 99629 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 20319828 is about 4507.7519896285. The cubic root of 20319828 is about 272.8810280083.

The spelling of 20319828 in words is "twenty million, three hundred nineteen thousand, eight hundred twenty-eight".