28468145 has 8 divisors (see below), whose sum is σ = 34995240. Its totient is φ = 22218880.

The previous prime is 28468129. The next prime is 28468159. The reversal of 28468145 is 54186482.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3297856 + 25170289 = 1816^2 + 5017^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28468145 - 2⁴ = 28468129 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28468099 and 28468108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69230 + ... + 69639.

It is an arithmetic number, because the mean of its divisors is an integer number (4374405).

Almost surely, 2^28468145 is an apocalyptic number.

It is an amenable number.

28468145 is a deficient number, since it is larger than the sum of its proper divisors (6527095).

28468145 is a wasteful number, since it uses less digits than its factorization.

28468145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138915.

The product of its digits is 61440, while the sum is 38.

The square root of 28468145 is about 5335.5547977694. The cubic root of 28468145 is about 305.3418901969.

The spelling of 28468145 in words is "twenty-eight million, four hundred sixty-eight thousand, one hundred forty-five".