28226880229 has 2 divisors, whose sum is σ = 28226880230. Its totient is φ = 28226880228.

The previous prime is 28226880221. The next prime is 28226880277. The reversal of 28226880229 is 92208862282.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24118711204 + 4108169025 = 155302^2 + 64095^2 .

It is a cyclic number.

It is not a de Polignac number, because 28226880229 - 2³ = 28226880221 is a prime.

It is a super-2 number, since 2×28226880229² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28226880221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14113440114 + 14113440115.

It is an arithmetic number, because the mean of its divisors is an integer number (14113440115).

Almost surely, 2^28226880229 is an apocalyptic number.

It is an amenable number.

28226880229 is a deficient number, since it is larger than the sum of its proper divisors (1).

28226880229 is an equidigital number, since it uses as much as digits as its factorization.

28226880229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 28226880229 in words is "twenty-eight billion, two hundred twenty-six million, eight hundred eighty thousand, two hundred twenty-nine".