2112293780 has 48 divisors (see below), whose sum is σ = 4664145024. Its totient is φ = 801989760.

The previous prime is 2112293761. The next prime is 2112293789. The reversal of 2112293780 is 873922112.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2112293780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112293789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42734 + ... + 77786.

It is an arithmetic number, because the mean of its divisors is an integer number (97169688).

Almost surely, 2^2112293780 is an apocalyptic number.

2112293780 is a gapful number since it is divisible by the number (20) 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 2112293780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2332072512).

2112293780 is an abundant number, since it is smaller than the sum of its proper divisors (2551851244).

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

2112293780 is a wasteful number, since it uses less digits than its factorization.

2112293780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35216 (or 35214 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 2112293780 is about 45959.6973445213. The cubic root of 2112293780 is about 1283.0732184723.

The spelling of 2112293780 in words is "two billion, one hundred twelve million, two hundred ninety-three thousand, seven hundred eighty".