28630545 has 8 divisors (see below), whose sum is σ = 45808896. Its totient is φ = 15269616.

The previous prime is 28630543. The next prime is 28630573. The reversal of 28630545 is 54503682.

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

It is not a de Polignac number, because 28630545 - 2¹ = 28630543 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28630541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 954337 + ... + 954366.

It is an arithmetic number, because the mean of its divisors is an integer number (5726112).

Almost surely, 2^28630545 is an apocalyptic number.

It is an amenable number.

28630545 is a deficient number, since it is larger than the sum of its proper divisors (17178351).

28630545 is a wasteful number, since it uses less digits than its factorization.

28630545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908711.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 28630545 is about 5350.7518163339. The cubic root of 28630545 is about 305.9214096092.

The spelling of 28630545 in words is "twenty-eight million, six hundred thirty thousand, five hundred forty-five".