28650227 has 4 divisors (see below), whose sum is σ = 28684440. Its totient is φ = 28616016.

The previous prime is 28650217. The next prime is 28650277. The reversal of 28650227 is 72205682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72205682 = 2 ⋅36102841.

It is a cyclic number.

It is not a de Polignac number, because 28650227 - 2¹⁸ = 28388083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28650193 and 28650202.

It is not an unprimeable number, because it can be changed into a prime (28650217) 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, 15818 + ... + 17535.

It is an arithmetic number, because the mean of its divisors is an integer number (7171110).

Almost surely, 2^28650227 is an apocalyptic number.

28650227 is a deficient number, since it is larger than the sum of its proper divisors (34213).

28650227 is an equidigital number, since it uses as much as digits as its factorization.

28650227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34212.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 28650227 is about 5352.5906811562. The cubic root of 28650227 is about 305.9914951999.

The spelling of 28650227 in words is "twenty-eight million, six hundred fifty thousand, two hundred twenty-seven".