20319112 has 32 divisors (see below), whose sum is σ = 42144480. Its totient is φ = 9106560.

The previous prime is 20319109. The next prime is 20319127. The reversal of 20319112 is 21191302.

It is a self number, because there is not a number n which added to its sum of digits gives 20319112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4843 + ... + 8005.

It is an arithmetic number, because the mean of its divisors is an integer number (1317015).

Almost surely, 2^20319112 is an apocalyptic number.

20319112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20319112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21072240).

20319112 is an abundant number, since it is smaller than the sum of its proper divisors (21825368).

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

20319112 is a wasteful number, since it uses less digits than its factorization.

20319112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3253 (or 3249 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 20319112 is about 4507.6725701852. The cubic root of 20319112 is about 272.8778228448.

It can be divided in two parts, 203191 and 12, that added together give a triangular number (203203 = T₆₃₇).

The spelling of 20319112 in words is "twenty million, three hundred nineteen thousand, one hundred twelve".