28651273 has 16 divisors (see below), whose sum is σ = 35247744. Its totient is φ = 22728960.

The previous prime is 28651253. The next prime is 28651279. The reversal of 28651273 is 37215682.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28651273 - 2⁵ = 28651241 is a prime.

Its product of digits (20160) is a multiple of the sum of its prime divisors (4032).

It is not an unprimeable number, because it can be changed into a prime (28651279) 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 15 ways as a sum of consecutive naturals, for example, 5286 + ... + 9232.

It is an arithmetic number, because the mean of its divisors is an integer number (2202984).

Almost surely, 2^28651273 is an apocalyptic number.

It is an amenable number.

28651273 is a deficient number, since it is larger than the sum of its proper divisors (6596471).

28651273 is a wasteful number, since it uses less digits than its factorization.

28651273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032.

The product of its digits is 20160, while the sum is 34.

The square root of 28651273 is about 5352.6883899588. The cubic root of 28651273 is about 305.9952190006.

The spelling of 28651273 in words is "twenty-eight million, six hundred fifty-one thousand, two hundred seventy-three".