2780534 has 8 divisors (see below), whose sum is σ = 4182408. Its totient is φ = 1386400.

The previous prime is 2780527. The next prime is 2780597. The reversal of 2780534 is 4350872.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2780497 and 2780506.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 932 + ... + 2535.

It is an arithmetic number, because the mean of its divisors is an integer number (522801).

2^2780534 is an apocalyptic number.

2780534 is a deficient number, since it is larger than the sum of its proper divisors (1401874).

2780534 is a wasteful number, since it uses less digits than its factorization.

2780534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3870.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 2780534 is about 1667.4933283225. The cubic root of 2780534 is about 140.6185892715.

The spelling of 2780534 in words is "two million, seven hundred eighty thousand, five hundred thirty-four".