2782866726 has 128 divisors (see below), whose sum is σ = 6501012480. Its totient is φ = 881798400.

The previous prime is 2782866703. The next prime is 2782866727. The reversal of 2782866726 is 6276682872.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782866727) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17072721 + ... + 17072883.

It is an arithmetic number, because the mean of its divisors is an integer number (50789160).

Almost surely, 2^2782866726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2782866726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3250506240).

2782866726 is an abundant number, since it is smaller than the sum of its proper divisors (3718145754).

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

2782866726 is a wasteful number, since it uses less digits than its factorization.

2782866726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379 (or 373 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 54.

The square root of 2782866726 is about 52752.8835799523. The cubic root of 2782866726 is about 1406.5790221767.

The spelling of 2782866726 in words is "two billion, seven hundred eighty-two million, eight hundred sixty-six thousand, seven hundred twenty-six".