2721798 has 24 divisors (see below), whose sum is σ = 5967000. Its totient is φ = 896544.

The previous prime is 2721793. The next prime is 2721799. The reversal of 2721798 is 8971272.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 753 + ... + 2451.

It is an arithmetic number, because the mean of its divisors is an integer number (248625).

2^2721798 is an apocalyptic number.

2721798 is an abundant number, since it is smaller than the sum of its proper divisors (3245202).

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

2721798 is a wasteful number, since it uses less digits than its factorization.

2721798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796 (or 1793 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 2721798 is about 1649.7872590125. The cubic root of 2721798 is about 139.6213920031.

The spelling of 2721798 in words is "two million, seven hundred twenty-one thousand, seven hundred ninety-eight".