2128736087 has 8 divisors (see below), whose sum is σ = 2153566800. Its totient is φ = 2103925824.

The previous prime is 2128736083. The next prime is 2128736119. The reversal of 2128736087 is 7806378212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2128736087 - 2² = 2128736083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128736081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329573 + ... + 335969.

It is an arithmetic number, because the mean of its divisors is an integer number (269195850).

Almost surely, 2^2128736087 is an apocalyptic number.

2128736087 is a deficient number, since it is larger than the sum of its proper divisors (24830713).

2128736087 is an equidigital number, since it uses as much as digits as its factorization.

2128736087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10225.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 2128736087 is about 46138.2280435649. The cubic root of 2128736087 is about 1286.3938076649.

The spelling of 2128736087 in words is "two billion, one hundred twenty-eight million, seven hundred thirty-six thousand, eighty-seven".