28632529 has 2 divisors, whose sum is σ = 28632530. Its totient is φ = 28632528.

The previous prime is 28632521. The next prime is 28632533. The reversal of 28632529 is 92523682.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28569025 + 63504 = 5345^2 + 252^2 .

It is a cyclic number.

It is not a de Polignac number, because 28632529 - 2³ = 28632521 is a prime.

It is equal to p_1778347 and since 28632529 and 1778347 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (28632521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14316264 + 14316265.

It is an arithmetic number, because the mean of its divisors is an integer number (14316265).

Almost surely, 2^28632529 is an apocalyptic number.

It is an amenable number.

28632529 is a deficient number, since it is larger than the sum of its proper divisors (1).

28632529 is an equidigital number, since it uses as much as digits as its factorization.

28632529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 28632529 is about 5350.9372076301. The cubic root of 28632529 is about 305.9284758859.

It can be divided in two parts, 28632 and 529, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 28632529 in words is "twenty-eight million, six hundred thirty-two thousand, five hundred twenty-nine".