2069128278 has 48 divisors (see below), whose sum is σ = 5126677920. Its totient is φ = 590819328.

The previous prime is 2069128273. The next prime is 2069128297. The reversal of 2069128278 is 8728219602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2069128273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256726 + ... + 264662.

It is an arithmetic number, because the mean of its divisors is an integer number (106805790).

Almost surely, 2^2069128278 is an apocalyptic number.

2069128278 is an abundant number, since it is smaller than the sum of its proper divisors (3057549642).

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

2069128278 is a wasteful number, since it uses less digits than its factorization.

2069128278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10021 (or 10018 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 2069128278 is about 45487.6717144327. The cubic root of 2069128278 is about 1274.2729732897.

The spelling of 2069128278 in words is "two billion, sixty-nine million, one hundred twenty-eight thousand, two hundred seventy-eight".