2757040 has 80 divisors (see below), whose sum is σ = 7562016. Its totient is φ = 921600.

The previous prime is 2757037. The next prime is 2757049. The reversal of 2757040 is 407572.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2756996 and 2757014.

It is not an unprimeable number, because it can be changed into a prime (2757049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11320 + ... + 11560.

2^2757040 is an apocalyptic number.

2757040 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 2757040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3781008).

2757040 is an abundant number, since it is smaller than the sum of its proper divisors (4804976).

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

2757040 is a wasteful number, since it uses less digits than its factorization.

2757040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278 (or 272 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 25.

The square root of 2757040 is about 1660.4336782901. The cubic root of 2757040 is about 140.2214183366.

The spelling of 2757040 in words is "two million, seven hundred fifty-seven thousand, forty".