2928305 has 8 divisors (see below), whose sum is σ = 3571944. Its totient is φ = 2304000.

The previous prime is 2928287. The next prime is 2928307. The reversal of 2928305 is 5038292.

It can be written as a sum of positive squares in 4 ways, for example, as 78961 + 2849344 = 281^2 + 1688^2 .

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

It is not a de Polignac number, because 2928305 - 2⁸ = 2928049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2928307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4496 + ... + 5105.

It is an arithmetic number, because the mean of its divisors is an integer number (446493).

2^2928305 is an apocalyptic number.

It is an amenable number.

2928305 is a deficient number, since it is larger than the sum of its proper divisors (643639).

2928305 is an equidigital number, since it uses as much as digits as its factorization.

2928305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9667.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2928305 is about 1711.2290904493. The cubic root of 2928305 is about 143.0667691520.

The spelling of 2928305 in words is "two million, nine hundred twenty-eight thousand, three hundred five".