2721404 has 24 divisors (see below), whose sum is σ = 5513088. Its totient is φ = 1151280.

The previous prime is 2721401. The next prime is 2721413. The reversal of 2721404 is 4041272.

2721404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1739 + ... + 2909.

It is an arithmetic number, because the mean of its divisors is an integer number (229712).

2^2721404 is an apocalyptic number.

It is an amenable number.

2721404 is an abundant number, since it is smaller than the sum of its proper divisors (2791684).

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

2721404 is a wasteful number, since it uses less digits than its factorization.

2721404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1263 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 2721404 is about 1649.6678453555. The cubic root of 2721404 is about 139.6146546083.

Adding to 2721404 its reverse (4041272), we get a palindrome (6762676).

It can be divided in two parts, 2721 and 404, that added together give a 5-th power (3125 = 5⁵).

The spelling of 2721404 in words is "two million, seven hundred twenty-one thousand, four hundred four".