2077790840 has 64 divisors (see below), whose sum is σ = 4861080000. Its totient is φ = 798336000.

The previous prime is 2077790839. The next prime is 2077790849. The reversal of 2077790840 is 480977702.

It is a junction number, because it is equal to n+sod(n) for n = 2077790791 and 2077790800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2077790849) 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 15 ways as a sum of consecutive naturals, for example, 226340 + ... + 235340.

It is an arithmetic number, because the mean of its divisors is an integer number (75954375).

Almost surely, 2^2077790840 is an apocalyptic number.

2077790840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2077790840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2430540000).

2077790840 is an abundant number, since it is smaller than the sum of its proper divisors (2783289160).

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

2077790840 is a wasteful number, since it uses less digits than its factorization.

2077790840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240 (or 9236 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 2077790840 is about 45582.7910510096. The cubic root of 2077790840 is about 1276.0487774647.

The spelling of 2077790840 in words is "two billion, seventy-seven million, seven hundred ninety thousand, eight hundred forty".