28153273 has 2 divisors, whose sum is σ = 28153274. Its totient is φ = 28153272.

The previous prime is 28153259. The next prime is 28153289. The reversal of 28153273 is 37235182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27321529 + 831744 = 5227^2 + 912^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28153273 is a prime.

It is a super-2 number, since 2×28153273² = 1585213561225058, which contains 22 as substring.

It is equal to p_1750387 and since 28153273 and 1750387 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 (28153243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14076636 + 14076637.

It is an arithmetic number, because the mean of its divisors is an integer number (14076637).

Almost surely, 2^28153273 is an apocalyptic number.

It is an amenable number.

28153273 is a deficient number, since it is larger than the sum of its proper divisors (1).

28153273 is an equidigital number, since it uses as much as digits as its factorization.

28153273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 31.

The square root of 28153273 is about 5305.9657933311. The cubic root of 28153273 is about 304.2119691161.

The spelling of 28153273 in words is "twenty-eight million, one hundred fifty-three thousand, two hundred seventy-three".