28213327 has 2 divisors, whose sum is σ = 28213328. Its totient is φ = 28213326.

The previous prime is 28213313. The next prime is 28213337. The reversal of 28213327 is 72331282.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28213327 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28213295 and 28213304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28213307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14106663 + 14106664.

It is an arithmetic number, because the mean of its divisors is an integer number (14106664).

Almost surely, 2^28213327 is an apocalyptic number.

28213327 is a deficient number, since it is larger than the sum of its proper divisors (1).

28213327 is an equidigital number, since it uses as much as digits as its factorization.

28213327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 28.

The square root of 28213327 is about 5311.6218803676. The cubic root of 28213327 is about 304.4281212598.

The spelling of 28213327 in words is "twenty-eight million, two hundred thirteen thousand, three hundred twenty-seven".