2745980 has 48 divisors (see below), whose sum is σ = 6150144. Its totient is φ = 1028160.

The previous prime is 2745979. The next prime is 2745989. The reversal of 2745980 is 895472.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2745980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745989) 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, 26609 + ... + 26711.

It is an arithmetic number, because the mean of its divisors is an integer number (128128).

2^2745980 is an apocalyptic number.

2745980 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 2745980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3075072).

2745980 is an abundant number, since it is smaller than the sum of its proper divisors (3404164).

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

2745980 is a wasteful number, since it uses less digits than its factorization.

2745980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 2745980 is about 1657.0998762899. The cubic root of 2745980 is about 140.0336653733.

The spelling of 2745980 in words is "two million, seven hundred forty-five thousand, nine hundred eighty".