2928813 has 4 divisors (see below), whose sum is σ = 3905088. Its totient is φ = 1952540.

The previous prime is 2928791. The next prime is 2928817. The reversal of 2928813 is 3188292.

2928813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2928813 - 2⁶ = 2928749 is a prime.

It is a D-number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2928817) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 488133 + ... + 488138.

It is an arithmetic number, because the mean of its divisors is an integer number (976272).

2^2928813 is an apocalyptic number.

It is an amenable number.

2928813 is a deficient number, since it is larger than the sum of its proper divisors (976275).

2928813 is an equidigital number, since it uses as much as digits as its factorization.

2928813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976274.

The product of its digits is 6912, while the sum is 33.

The square root of 2928813 is about 1711.3775153367. The cubic root of 2928813 is about 143.0750417097.

It can be divided in two parts, 2928 and 813, that added together give a triangular number (3741 = T₈₆).

The spelling of 2928813 in words is "two million, nine hundred twenty-eight thousand, eight hundred thirteen".