28532107 has 2 divisors, whose sum is σ = 28532108. Its totient is φ = 28532106.

The previous prime is 28532099. The next prime is 28532111. The reversal of 28532107 is 70123582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28532107 - 2³ = 28532099 is a prime.

It is a super-2 number, since 2×28532107² = 1628162259718898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28532407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14266053 + 14266054.

It is an arithmetic number, because the mean of its divisors is an integer number (14266054).

Almost surely, 2^28532107 is an apocalyptic number.

28532107 is a deficient number, since it is larger than the sum of its proper divisors (1).

28532107 is an equidigital number, since it uses as much as digits as its factorization.

28532107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 28532107 is about 5341.5453756380. The cubic root of 28532107 is about 305.5703990487.

Adding to 28532107 its reverse (70123582), we get a palindrome (98655689).

The spelling of 28532107 in words is "twenty-eight million, five hundred thirty-two thousand, one hundred seven".