28591153 has 2 divisors, whose sum is σ = 28591154. Its totient is φ = 28591152.

The previous prime is 28591151. The next prime is 28591169. The reversal of 28591153 is 35119582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28483569 + 107584 = 5337^2 + 328^2 .

It is a cyclic number.

It is not a de Polignac number, because 28591153 - 2¹ = 28591151 is a prime.

Together with 28591151, it forms a pair of twin primes.

It is equal to p_1775932 and since 28591153 and 1775932 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 (28591151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14295576 + 14295577.

It is an arithmetic number, because the mean of its divisors is an integer number (14295577).

Almost surely, 2^28591153 is an apocalyptic number.

It is an amenable number.

28591153 is a deficient number, since it is larger than the sum of its proper divisors (1).

28591153 is an equidigital number, since it uses as much as digits as its factorization.

28591153 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 34.

The square root of 28591153 is about 5347.0695712699. The cubic root of 28591153 is about 305.7810421891.

The spelling of 28591153 in words is "twenty-eight million, five hundred ninety-one thousand, one hundred fifty-three".