28009153 has 2 divisors, whose sum is σ = 28009154. Its totient is φ = 28009152.

The previous prime is 28009139. The next prime is 28009171. The reversal of 28009153 is 35190082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22496049 + 5513104 = 4743^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 28009153 - 2¹³ = 28000961 is a prime.

It is not a weakly prime, because it can be changed into another prime (28009103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14004576 + 14004577.

It is an arithmetic number, because the mean of its divisors is an integer number (14004577).

Almost surely, 2^28009153 is an apocalyptic number.

It is an amenable number.

28009153 is a deficient number, since it is larger than the sum of its proper divisors (1).

28009153 is an equidigital number, since it uses as much as digits as its factorization.

28009153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 28009153 is about 5292.3674286655. The cubic root of 28009153 is about 303.6919815576.

The spelling of 28009153 in words is "twenty-eight million, nine thousand, one hundred fifty-three".