2780722692 has 108 divisors (see below), whose sum is σ = 7924473648. Its totient is φ = 815349600.

The previous prime is 2780722673. The next prime is 2780722699. The reversal of 2780722692 is 2962270872.

2780722692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2780722699) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 376903 + ... + 384209.

It is an arithmetic number, because the mean of its divisors is an integer number (73374756).

Almost surely, 2^2780722692 is an apocalyptic number.

2780722692 is a gapful number since it is divisible by the number (22) 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 2780722692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3962236824).

2780722692 is an abundant number, since it is smaller than the sum of its proper divisors (5143750956).

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

2780722692 is a wasteful number, since it uses less digits than its factorization.

2780722692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7390 (or 7354 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 2780722692 is about 52732.5581780365. The cubic root of 2780722692 is about 1406.2177007574.

The spelling of 2780722692 in words is "two billion, seven hundred eighty million, seven hundred twenty-two thousand, six hundred ninety-two".