2780536 has 32 divisors (see below), whose sum is σ = 5990400. Its totient is φ = 1196640.

The previous prime is 2780527. The next prime is 2780597. The reversal of 2780536 is 6350872.

It is a junction number, because it is equal to n+sod(n) for n = 2780498 and 2780507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 841 + ... + 2503.

It is an arithmetic number, because the mean of its divisors is an integer number (187200).

2^2780536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2780536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2995200).

2780536 is an abundant number, since it is smaller than the sum of its proper divisors (3209864).

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

2780536 is a wasteful number, since it uses less digits than its factorization.

2780536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699 (or 1695 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 2780536 is about 1667.4939280249. The cubic root of 2780536 is about 140.6186229865.

The spelling of 2780536 in words is "two million, seven hundred eighty thousand, five hundred thirty-six".