28457333 has 2 divisors, whose sum is σ = 28457334. Its totient is φ = 28457332.

The previous prime is 28457267. The next prime is 28457339. The reversal of 28457333 is 33375482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24226084 + 4231249 = 4922^2 + 2057^2 .

It is a cyclic number.

It is not a de Polignac number, because 28457333 - 2¹² = 28453237 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28457293 and 28457302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28457339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14228666 + 14228667.

It is an arithmetic number, because the mean of its divisors is an integer number (14228667).

Almost surely, 2^28457333 is an apocalyptic number.

It is an amenable number.

28457333 is a deficient number, since it is larger than the sum of its proper divisors (1).

28457333 is an equidigital number, since it uses as much as digits as its factorization.

28457333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 35.

The square root of 28457333 is about 5334.5414985732. The cubic root of 28457333 is about 305.3032297391.

The spelling of 28457333 in words is "twenty-eight million, four hundred fifty-seven thousand, three hundred thirty-three".