2721120 has 48 divisors (see below), whose sum is σ = 8573040. Its totient is φ = 725504.

The previous prime is 2721119. The next prime is 2721127. The reversal of 2721120 is 211272.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2721120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721127) 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, 2355 + ... + 3314.

It is an arithmetic number, because the mean of its divisors is an integer number (178605).

2^2721120 is an apocalyptic number.

2721120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2721120 is an abundant number, since it is smaller than the sum of its proper divisors (5851920).

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

2721120 is a wasteful number, since it uses less digits than its factorization.

2721120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5687 (or 5679 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 2721120 is about 1649.5817651756. The cubic root of 2721120 is about 139.6097978088.

Adding to 2721120 its reverse (211272), we get a palindrome (2932392).

The spelling of 2721120 in words is "two million, seven hundred twenty-one thousand, one hundred twenty".