2704221620 has 24 divisors (see below), whose sum is σ = 6012917064. Its totient is φ = 1018059776.

The previous prime is 2704221617. The next prime is 2704221629. The reversal of 2704221620 is 261224072.

It can be written as a sum of positive squares in 4 ways, for example, as 609694864 + 2094526756 = 24692^2 + 45766^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2704221620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2704221629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3976457 + ... + 3977136.

It is an arithmetic number, because the mean of its divisors is an integer number (250538211).

Almost surely, 2^2704221620 is an apocalyptic number.

2704221620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2704221620 is an abundant number, since it is smaller than the sum of its proper divisors (3308695444).

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

2704221620 is a wasteful number, since it uses less digits than its factorization.

2704221620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953619 (or 7953617 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 2704221620 is about 52002.1309178768. The cubic root of 2704221620 is about 1393.2020138034.

Adding to 2704221620 its reverse (261224072), we get a palindrome (2965445692).

The spelling of 2704221620 in words is "two billion, seven hundred four million, two hundred twenty-one thousand, six hundred twenty".