2728925 has 12 divisors (see below), whose sum is σ = 3583476. Its totient is φ = 2054400.

The previous prime is 2728907. The next prime is 2728931. The reversal of 2728925 is 5298272.

It can be written as a sum of positive squares in 6 ways, for example, as 32761 + 2696164 = 181^2 + 1642^2 .

It is not a de Polignac number, because 2728925 - 2⁸ = 2728669 is a prime.

It is a Duffinian number.

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 11 ways as a sum of consecutive naturals, for example, 2786 + ... + 3635.

It is an arithmetic number, because the mean of its divisors is an integer number (298623).

2^2728925 is an apocalyptic number.

2728925 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2728925 is a deficient number, since it is larger than the sum of its proper divisors (854551).

2728925 is a wasteful number, since it uses less digits than its factorization.

2728925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6448 (or 6443 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 2728925 is about 1651.9458223562. The cubic root of 2728925 is about 139.7431515147.

The spelling of 2728925 in words is "two million, seven hundred twenty-eight thousand, nine hundred twenty-five".