2782560 has 192 divisors, whose sum is σ = 10450944. Its totient is φ = 614400.

The previous prime is 2782523. The next prime is 2782567. The reversal of 2782560 is 652872.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2782567) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89745 + ... + 89775.

It is an arithmetic number, because the mean of its divisors is an integer number (54432).

2^2782560 is an apocalyptic number.

2782560 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 2782560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5225472).

2782560 is an abundant number, since it is smaller than the sum of its proper divisors (7668384).

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

2782560 is a wasteful number, since it uses less digits than its factorization.

2782560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2782560 is about 1668.1007163838. The cubic root of 2782560 is about 140.6527342829.

The spelling of 2782560 in words is "two million, seven hundred eighty-two thousand, five hundred sixty".