28253377 has 2 divisors, whose sum is σ = 28253378. Its totient is φ = 28253376.

The previous prime is 28253363. The next prime is 28253383. The reversal of 28253377 is 77335282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28206721 + 46656 = 5311^2 + 216^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28253377 is a prime.

It is not a weakly prime, because it can be changed into another prime (28253327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14126688 + 14126689.

It is an arithmetic number, because the mean of its divisors is an integer number (14126689).

Almost surely, 2^28253377 is an apocalyptic number.

It is an amenable number.

28253377 is a deficient number, since it is larger than the sum of its proper divisors (1).

28253377 is an equidigital number, since it uses as much as digits as its factorization.

28253377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 37.

The square root of 28253377 is about 5315.3905783112. The cubic root of 28253377 is about 304.5721026440.

The spelling of 28253377 in words is "twenty-eight million, two hundred fifty-three thousand, three hundred seventy-seven".