2391722112 has 128 divisors (see below), whose sum is σ = 7244415360. Its totient is φ = 692600832.

The previous prime is 2391722111. The next prime is 2391722131. The reversal of 2391722112 is 2112271932.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×2391722112² = 11440669322059481088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2391722112.

It is not an unprimeable number, because it can be changed into a prime (2391722111) 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, 70773 + ... + 98955.

It is an arithmetic number, because the mean of its divisors is an integer number (56596995).

Almost surely, 2^2391722112 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 2391722112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3622207680).

2391722112 is an abundant number, since it is smaller than the sum of its proper divisors (4852693248).

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

2391722112 is a wasteful number, since it uses less digits than its factorization.

2391722112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28230 (or 28218 counting only the distinct ones).

The product of its digits is 3024, while the sum is 30.

The square root of 2391722112 is about 48905.2360386902. The cubic root of 2391722112 is about 1337.3248239672.

The spelling of 2391722112 in words is "two billion, three hundred ninety-one million, seven hundred twenty-two thousand, one hundred twelve".