28651075 has 6 divisors (see below), whose sum is σ = 35527364. Its totient is φ = 22920840.

The previous prime is 28651013. The next prime is 28651079. The reversal of 28651075 is 57015682.

It is not a de Polignac number, because 28651075 - 2⁹ = 28650563 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28651075.

It is not an unprimeable number, because it can be changed into a prime (28651079) 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 5 ways as a sum of consecutive naturals, for example, 572997 + ... + 573046.

Almost surely, 2^28651075 is an apocalyptic number.

28651075 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

28651075 is a deficient number, since it is larger than the sum of its proper divisors (6876289).

28651075 is a wasteful number, since it uses less digits than its factorization.

28651075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146053 (or 1146048 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 28651075 is about 5352.6698945480. The cubic root of 28651075 is about 305.9945141198.

The spelling of 28651075 in words is "twenty-eight million, six hundred fifty-one thousand, seventy-five".