28227898 has 8 divisors (see below), whose sum is σ = 42371892. Its totient is φ = 14103936.

The previous prime is 28227893. The next prime is 28227907. The reversal of 28227898 is 89872282.

It can be written as a sum of positive squares in 2 ways, for example, as 18636489 + 9591409 = 4317^2 + 3097^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28227893) 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, 765 + ... + 7552.

Almost surely, 2^28227898 is an apocalyptic number.

28227898 is a deficient number, since it is larger than the sum of its proper divisors (14143994).

28227898 is a wasteful number, since it uses less digits than its factorization.

28227898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016.

The product of its digits is 258048, while the sum is 46.

The square root of 28227898 is about 5312.9933182717. The cubic root of 28227898 is about 304.4805203587.

It can be divided in two parts, 282278 and 98, that added together give a triangular number (282376 = T₇₅₁).

The spelling of 28227898 in words is "twenty-eight million, two hundred twenty-seven thousand, eight hundred ninety-eight".