2040278128 has 20 divisors (see below), whose sum is σ = 4517758960. Its totient is φ = 874404864.

The previous prime is 2040278111. The next prime is 2040278129. The reversal of 2040278128 is 8218720402.

It is a junction number, because it is equal to n+sod(n) for n = 2040278093 and 2040278102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040278129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9108273 + ... + 9108496.

It is an arithmetic number, because the mean of its divisors is an integer number (225887948).

Almost surely, 2^2040278128 is an apocalyptic number.

2040278128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2040278128 is an abundant number, since it is smaller than the sum of its proper divisors (2477480832).

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

2040278128 is a wasteful number, since it uses less digits than its factorization.

2040278128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18216784 (or 18216778 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 2040278128 is about 45169.4379863199. The cubic root of 2040278128 is about 1268.3227757204.

The spelling of 2040278128 in words is "two billion, forty million, two hundred seventy-eight thousand, one hundred twenty-eight".