2136617728 has 72 divisors (see below), whose sum is σ = 4941231008. Its totient is φ = 903094272.

The previous prime is 2136617713. The next prime is 2136617753. The reversal of 2136617728 is 8277166312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122650 + ... + 138982.

Almost surely, 2^2136617728 is an apocalyptic number.

2136617728 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 2136617728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2470615504).

2136617728 is an abundant number, since it is smaller than the sum of its proper divisors (2804613280).

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

2136617728 is an equidigital number, since it uses as much as digits as its factorization.

2136617728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16429 (or 16415 counting only the distinct ones).

The product of its digits is 169344, while the sum is 43.

The square root of 2136617728 is about 46223.5624762956. The cubic root of 2136617728 is about 1287.9794757734.

The spelling of 2136617728 in words is "two billion, one hundred thirty-six million, six hundred seventeen thousand, seven hundred twenty-eight".