2721480 has 32 divisors (see below), whose sum is σ = 8164800. Its totient is φ = 725696.

The previous prime is 2721451. The next prime is 2721517. The reversal of 2721480 is 841272.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2721480.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11220 + ... + 11459.

It is an arithmetic number, because the mean of its divisors is an integer number (255150).

2^2721480 is an apocalyptic number.

2721480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2721480 is an abundant number, since it is smaller than the sum of its proper divisors (5443320).

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

2721480 is a wasteful number, since it uses less digits than its factorization.

2721480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22693 (or 22689 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2721480 is about 1649.6908801348. The cubic root of 2721480 is about 139.6159542580.

The spelling of 2721480 in words is "two million, seven hundred twenty-one thousand, four hundred eighty".