2756780 has 48 divisors (see below), whose sum is σ = 6519744. Its totient is φ = 971520.

The previous prime is 2756777. The next prime is 2756783. The reversal of 2756780 is 876572.

It is an interprime number because it is at equal distance from previous prime (2756777) and next prime (2756783).

It is a self number, because there is not a number n which added to its sum of digits gives 2756780.

It is not an unprimeable number, because it can be changed into a prime (2756783) 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, 5750 + ... + 6210.

It is an arithmetic number, because the mean of its divisors is an integer number (135828).

2^2756780 is an apocalyptic number.

2756780 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 2756780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3259872).

2756780 is an abundant number, since it is smaller than the sum of its proper divisors (3762964).

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

2756780 is a wasteful number, since it uses less digits than its factorization.

2756780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 2756780 is about 1660.3553836453. The cubic root of 2756780 is about 140.2170103828.

The spelling of 2756780 in words is "two million, seven hundred fifty-six thousand, seven hundred eighty".