2856724 has 24 divisors (see below), whose sum is σ = 5436648. Its totient is φ = 1305600.

The previous prime is 2856683. The next prime is 2856773. The reversal of 2856724 is 4276582.

2856724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 868624 + 1988100 = 932^2 + 1410^2 .

It is a d-powerful number, because it can be written as 2 + 8⁶ + 5⁸ + 6⁸ + 7² + 2¹⁸ + 4⁹ .

It is a self number, because there is not a number n which added to its sum of digits gives 2856724.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6924 + ... + 7324.

It is an arithmetic number, because the mean of its divisors is an integer number (226527).

2^2856724 is an apocalyptic number.

It is an amenable number.

2856724 is a deficient number, since it is larger than the sum of its proper divisors (2579924).

2856724 is a wasteful number, since it uses less digits than its factorization.

2856724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555 (or 553 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 2856724 is about 1690.1846053020. The cubic root of 2856724 is about 141.8914067592.

The spelling of 2856724 in words is "two million, eight hundred fifty-six thousand, seven hundred twenty-four".