2906128 has 20 divisors (see below), whose sum is σ = 5783980. Its totient is φ = 1413504.

The previous prime is 2906089. The next prime is 2906129. The reversal of 2906128 is 8216092.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2782224 + 123904 = 1668^2 + 352^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2906096 and 2906105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2906129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863 + ... + 3046.

It is an arithmetic number, because the mean of its divisors is an integer number (289199).

2^2906128 is an apocalyptic number.

It is an amenable number.

2906128 is a deficient number, since it is larger than the sum of its proper divisors (2877852).

2906128 is a wasteful number, since it uses less digits than its factorization.

2906128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954 (or 4948 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2906128 is about 1704.7369298516. The cubic root of 2906128 is about 142.7046899361.

The spelling of 2906128 in words is "two million, nine hundred six thousand, one hundred twenty-eight".