2734578 has 48 divisors (see below), whose sum is σ = 7390656. Its totient is φ = 709920.

The previous prime is 2734573. The next prime is 2734579. The reversal of 2734578 is 8754372.

It is not an unprimeable number, because it can be changed into a prime (2734573) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 400 + ... + 2372.

It is an arithmetic number, because the mean of its divisors is an integer number (153972).

2^2734578 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2734578, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3695328).

2734578 is an abundant number, since it is smaller than the sum of its proper divisors (4656078).

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

2734578 is a wasteful number, since it uses less digits than its factorization.

2734578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999 (or 1996 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 2734578 is about 1653.6559497066. The cubic root of 2734578 is about 139.8395781523.

It can be divided in two parts, 273 and 4578, that added together give a triangular number (4851 = T₉₈).

The spelling of 2734578 in words is "two million, seven hundred thirty-four thousand, five hundred seventy-eight".