2311967728 has 80 divisors (see below), whose sum is σ = 5623211520. Its totient is φ = 897861888.

The previous prime is 2311967663. The next prime is 2311967731. The reversal of 2311967728 is 8277691132.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25326 + ... + 72562.

It is an arithmetic number, because the mean of its divisors is an integer number (70290144).

Almost surely, 2^2311967728 is an apocalyptic number.

2311967728 is a gapful number since it is divisible by the number (28) 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 2311967728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2811605760).

2311967728 is an abundant number, since it is smaller than the sum of its proper divisors (3311243792).

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

2311967728 is a wasteful number, since it uses less digits than its factorization.

2311967728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47294 (or 47288 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 2311967728 is about 48082.9255349547. The cubic root of 2311967728 is about 1322.2916512416.

The spelling of 2311967728 in words is "two billion, three hundred eleven million, nine hundred sixty-seven thousand, seven hundred twenty-eight".