2628545 has 4 divisors (see below), whose sum is σ = 3154260. Its totient is φ = 2102832.

The previous prime is 2628541. The next prime is 2628553. The reversal of 2628545 is 5458262.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1620529 + 1008016 = 1273^2 + 1004^2 .

It is a cyclic number.

It is not a de Polignac number, because 2628545 - 2² = 2628541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2628541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262850 + ... + 262859.

It is an arithmetic number, because the mean of its divisors is an integer number (788565).

2^2628545 is an apocalyptic number.

It is an amenable number.

2628545 is a deficient number, since it is larger than the sum of its proper divisors (525715).

2628545 is an equidigital number, since it uses as much as digits as its factorization.

2628545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525714.

The product of its digits is 19200, while the sum is 32.

The square root of 2628545 is about 1621.2788162435. The cubic root of 2628545 is about 138.0082785764.

The spelling of 2628545 in words is "two million, six hundred twenty-eight thousand, five hundred forty-five".