28901029 has 2 divisors, whose sum is σ = 28901030. Its totient is φ = 28901028.

The previous prime is 28901027. The next prime is 28901057. The reversal of 28901029 is 92010982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28890625 + 10404 = 5375^2 + 102^2 .

It is a cyclic number.

It is not a de Polignac number, because 28901029 - 2¹ = 28901027 is a prime.

Together with 28901027, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28901027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14450514 + 14450515.

It is an arithmetic number, because the mean of its divisors is an integer number (14450515).

Almost surely, 2^28901029 is an apocalyptic number.

It is an amenable number.

28901029 is a deficient number, since it is larger than the sum of its proper divisors (1).

28901029 is an equidigital number, since it uses as much as digits as its factorization.

28901029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 28901029 is about 5375.9677268377. The cubic root of 28901029 is about 306.8817781599.

The spelling of 28901029 in words is "twenty-eight million, nine hundred one thousand, twenty-nine".