2102758128 has 30 divisors (see below), whose sum is σ = 5884802664. Its totient is φ = 700919328.

The previous prime is 2102758123. The next prime is 2102758181. The reversal of 2102758128 is 8218572012.

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 = 2102758092 and 2102758101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102758121) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 7301100 + ... + 7301387.

Almost surely, 2^2102758128 is an apocalyptic number.

It is an amenable number.

2102758128 is an abundant number, since it is smaller than the sum of its proper divisors (3782044536).

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

2102758128 is a wasteful number, since it uses less digits than its factorization.

2102758128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14602501 (or 14602492 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 2102758128 is about 45855.8407184952. The cubic root of 2102758128 is about 1281.1395548407.

The spelling of 2102758128 in words is "two billion, one hundred two million, seven hundred fifty-eight thousand, one hundred twenty-eight".