168828249 has 4 divisors (see below), whose sum is σ = 225104336. Its totient is φ = 112552164.

The previous prime is 168828221. The next prime is 168828271. The reversal of 168828249 is 942828861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 168828249 - 2¹⁵ = 168795481 is a prime.

It is a super-3 number, since 3×168828249³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168828198 and 168828207.

It is not an unprimeable number, because it can be changed into a prime (168821249) 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 in 3 ways as a sum of consecutive naturals, for example, 28138039 + ... + 28138044.

It is an arithmetic number, because the mean of its divisors is an integer number (56276084).

Almost surely, 2^168828249 is an apocalyptic number.

It is an amenable number.

168828249 is a deficient number, since it is larger than the sum of its proper divisors (56276087).

168828249 is an equidigital number, since it uses as much as digits as its factorization.

168828249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56276086.

The product of its digits is 442368, while the sum is 48.

The square root of 168828249 is about 12993.3925131199. The cubic root of 168828249 is about 552.6901254583.

The spelling of 168828249 in words is "one hundred sixty-eight million, eight hundred twenty-eight thousand, two hundred forty-nine".