2685289128 has 32 divisors (see below), whose sum is σ = 7108119360. Its totient is φ = 842443520.

The previous prime is 2685289127. The next prime is 2685289147. The reversal of 2685289128 is 8219825862.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2685289127) 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, 3290388 + ... + 3291203.

It is an arithmetic number, because the mean of its divisors is an integer number (222128730).

Almost surely, 2^2685289128 is an apocalyptic number.

It is an amenable number.

2685289128 is an abundant number, since it is smaller than the sum of its proper divisors (4422830232).

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

2685289128 is a wasteful number, since it uses less digits than its factorization.

2685289128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6581617 (or 6581613 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 51.

The square root of 2685289128 is about 51819.7754530064. The cubic root of 2685289128 is about 1389.9430868818.

The spelling of 2685289128 in words is "two billion, six hundred eighty-five million, two hundred eighty-nine thousand, one hundred twenty-eight".