28951129 has 2 divisors, whose sum is σ = 28951130. Its totient is φ = 28951128.

The previous prime is 28951127. The next prime is 28951157. The reversal of 28951129 is 92115982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26501904 + 2449225 = 5148^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 28951129 - 2¹ = 28951127 is a prime.

Together with 28951127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (28951127) 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, 14475564 + 14475565.

It is an arithmetic number, because the mean of its divisors is an integer number (14475565).

Almost surely, 2^28951129 is an apocalyptic number.

It is an amenable number.

28951129 is a deficient number, since it is larger than the sum of its proper divisors (1).

28951129 is an equidigital number, since it uses as much as digits as its factorization.

28951129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 37.

The square root of 28951129 is about 5380.6253354048. The cubic root of 28951129 is about 307.0590025483.

The spelling of 28951129 in words is "twenty-eight million, nine hundred fifty-one thousand, one hundred twenty-nine".