28351227 has 16 divisors (see below), whose sum is σ = 38408480. Its totient is φ = 18600192.

The previous prime is 28351201. The next prime is 28351247. The reversal of 28351227 is 72215382.

It is not a de Polignac number, because 28351227 - 2⁶ = 28351163 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28351194 and 28351203.

It is not an unprimeable number, because it can be changed into a prime (28351247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90423 + ... + 90735.

It is an arithmetic number, because the mean of its divisors is an integer number (2400530).

Almost surely, 2^28351227 is an apocalyptic number.

28351227 is a deficient number, since it is larger than the sum of its proper divisors (10057253).

28351227 is a wasteful number, since it uses less digits than its factorization.

28351227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702.

The product of its digits is 6720, while the sum is 30.

The square root of 28351227 is about 5324.5870262397. The cubic root of 28351227 is about 304.9233059874.

The spelling of 28351227 in words is "twenty-eight million, three hundred fifty-one thousand, two hundred twenty-seven".