2115723264 has 224 divisors, whose sum is σ = 6228161280. Its totient is φ = 635830272.

The previous prime is 2115723263. The next prime is 2115723289. The reversal of 2115723264 is 4623275112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115723263) 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, 10739614 + ... + 10739810.

Almost surely, 2^2115723264 is an apocalyptic number.

2115723264 is a gapful number since it is divisible by the number (24) 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 2115723264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3114080640).

2115723264 is an abundant number, since it is smaller than the sum of its proper divisors (4112438016).

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

2115723264 is a wasteful number, since it uses less digits than its factorization.

2115723264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 244 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 2115723264 is about 45996.9919016450. The cubic root of 2115723264 is about 1283.7672349099.

Adding to 2115723264 its reverse (4623275112), we get a palindrome (6738998376).

The spelling of 2115723264 in words is "two billion, one hundred fifteen million, seven hundred twenty-three thousand, two hundred sixty-four".