2780734 has 8 divisors (see below), whose sum is σ = 4550328. Its totient is φ = 1263960.

The previous prime is 2780719. The next prime is 2780753. The reversal of 2780734 is 4370872.

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 = 2780696 and 2780705.

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, 63177 + ... + 63220.

It is an arithmetic number, because the mean of its divisors is an integer number (568791).

2^2780734 is an apocalyptic number.

2780734 is a deficient number, since it is larger than the sum of its proper divisors (1769594).

2780734 is a wasteful number, since it uses less digits than its factorization.

2780734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126410.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 2780734 is about 1667.5532974991. The cubic root of 2780734 is about 140.6219606915.

The spelling of 2780734 in words is "two million, seven hundred eighty thousand, seven hundred thirty-four".