28840153 has 2 divisors, whose sum is σ = 28840154. Its totient is φ = 28840152.

The previous prime is 28840127. The next prime is 28840193. The reversal of 28840153 is 35104882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28643904 + 196249 = 5352^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 28840153 - 2⁵ = 28840121 is a prime.

It is not a weakly prime, because it can be changed into another prime (28840193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14420076 + 14420077.

It is an arithmetic number, because the mean of its divisors is an integer number (14420077).

Almost surely, 2^28840153 is an apocalyptic number.

It is an amenable number.

28840153 is a deficient number, since it is larger than the sum of its proper divisors (1).

28840153 is an equidigital number, since it uses as much as digits as its factorization.

28840153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 28840153 is about 5370.3028778645. The cubic root of 28840153 is about 306.6661587631. Note that the first 3 decimals are identical.

The spelling of 28840153 in words is "twenty-eight million, eight hundred forty thousand, one hundred fifty-three".