28755677 has 2 divisors, whose sum is σ = 28755678. Its totient is φ = 28755676.

The previous prime is 28755667. The next prime is 28755703. The reversal of 28755677 is 77655782.

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., 17859076 + 10896601 = 4226^2 + 3301^2 .

It is a cyclic number.

It is not a de Polignac number, because 28755677 - 2⁶ = 28755613 is a prime.

It is a super-3 number, since 3×28755677³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28755667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14377838 + 14377839.

It is an arithmetic number, because the mean of its divisors is an integer number (14377839).

Almost surely, 2^28755677 is an apocalyptic number.

It is an amenable number.

28755677 is a deficient number, since it is larger than the sum of its proper divisors (1).

28755677 is an equidigital number, since it uses as much as digits as its factorization.

28755677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 823200, while the sum is 47.

The square root of 28755677 is about 5362.4320042309. The cubic root of 28755677 is about 306.3664462356.

The spelling of 28755677 in words is "twenty-eight million, seven hundred fifty-five thousand, six hundred seventy-seven".