20312348892 has 144 divisors (see below), whose sum is σ = 55521801216. Its totient is φ = 5761923200.

The previous prime is 20312348839. The next prime is 20312348893. The reversal of 20312348892 is 29884321302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312348893) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1563142 + ... + 1576082.

It is an arithmetic number, because the mean of its divisors is an integer number (385568064).

Almost surely, 2^20312348892 is an apocalyptic number.

20312348892 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 20312348892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27760900608).

20312348892 is an abundant number, since it is smaller than the sum of its proper divisors (35209452324).

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

20312348892 is a wasteful number, since it uses less digits than its factorization.

20312348892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13040 (or 13027 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The spelling of 20312348892 in words is "twenty billion, three hundred twelve million, three hundred forty-eight thousand, eight hundred ninety-two".