2731960 has 64 divisors (see below), whose sum is σ = 7672320. Its totient is φ = 850560.

The previous prime is 2731933. The next prime is 2731961. The reversal of 2731960 is 691372.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2731961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2637 + ... + 3523.

It is an arithmetic number, because the mean of its divisors is an integer number (119880).

2^2731960 is an apocalyptic number.

2731960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2731960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3836160).

2731960 is an abundant number, since it is smaller than the sum of its proper divisors (4940360).

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

2731960 is a wasteful number, since it uses less digits than its factorization.

2731960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 912 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 2731960 is about 1652.8641807481. The cubic root of 2731960 is about 139.7949378814.

The spelling of 2731960 in words is "two million, seven hundred thirty-one thousand, nine hundred sixty".