2779722 has 48 divisors (see below), whose sum is σ = 6683040. Its totient is φ = 828000.

The previous prime is 2779717. The next prime is 2779727. The reversal of 2779722 is 2279772.

It is an interprime number because it is at equal distance from previous prime (2779717) and next prime (2779727).

It is not an unprimeable number, because it can be changed into a prime (2779727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19929 + ... + 20067.

It is an arithmetic number, because the mean of its divisors is an integer number (139230).

2^2779722 is an apocalyptic number.

2779722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2779722 is the 834-th decagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2779722, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3341520).

2779722 is an abundant number, since it is smaller than the sum of its proper divisors (3903318).

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

2779722 is a wasteful number, since it uses less digits than its factorization.

2779722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 256 counting only the distinct ones).

The product of its digits is 24696, while the sum is 36.

The square root of 2779722 is about 1667.2498313090. The cubic root of 2779722 is about 140.6048996456.

It can be divided in two parts, 277 and 9722, that added together give a palindrome (9999).

The spelling of 2779722 in words is "two million, seven hundred seventy-nine thousand, seven hundred twenty-two".