2115339840 has 224 divisors, whose sum is σ = 7538069760. Its totient is φ = 558379008.

The previous prime is 2115339833. The next prime is 2115339851. The reversal of 2115339840 is 489335112.

2115339840 is a `hidden beast` number, since 211 + 53 + 398 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2115339795 and 2115339804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 888732 + ... + 891108.

Almost surely, 2^2115339840 is an apocalyptic number.

2115339840 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 2115339840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3769034880).

2115339840 is an abundant number, since it is smaller than the sum of its proper divisors (5422729920).

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

2115339840 is a wasteful number, since it uses less digits than its factorization.

2115339840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2115339840 is about 45992.8237880650. The cubic root of 2115339840 is about 1283.6896795707.

The spelling of 2115339840 in words is "two billion, one hundred fifteen million, three hundred thirty-nine thousand, eight hundred forty".