2781134286 has 64 divisors (see below), whose sum is σ = 6713376768. Its totient is φ = 750882528.

The previous prime is 2781134273. The next prime is 2781134299. The reversal of 2781134286 is 6824311872.

It is an interprime number because it is at equal distance from previous prime (2781134273) and next prime (2781134299).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62835 + ... + 97521.

It is an arithmetic number, because the mean of its divisors is an integer number (104896512).

Almost surely, 2^2781134286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2781134286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3356688384).

2781134286 is an abundant number, since it is smaller than the sum of its proper divisors (3932242482).

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

2781134286 is a wasteful number, since it uses less digits than its factorization.

2781134286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34805.

The product of its digits is 129024, while the sum is 42.

The square root of 2781134286 is about 52736.4606889768. The cubic root of 2781134286 is about 1406.2870786707.

The spelling of 2781134286 in words is "two billion, seven hundred eighty-one million, one hundred thirty-four thousand, two hundred eighty-six".