28456067 has 4 divisors (see below), whose sum is σ = 29117880. Its totient is φ = 27794256.

The previous prime is 28456063. The next prime is 28456081. The reversal of 28456067 is 76065482.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76065482 = 2 ⋅38032741.

It is a cyclic number.

It is not a de Polignac number, because 28456067 - 2² = 28456063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28456067.

It is not an unprimeable number, because it can be changed into a prime (28456063) 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, 330842 + ... + 330927.

It is an arithmetic number, because the mean of its divisors is an integer number (7279470).

Almost surely, 2^28456067 is an apocalyptic number.

28456067 is a deficient number, since it is larger than the sum of its proper divisors (661813).

28456067 is an equidigital number, since it uses as much as digits as its factorization.

28456067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661812.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 28456067 is about 5334.4228366338. The cubic root of 28456067 is about 305.2987022638.

The spelling of 28456067 in words is "twenty-eight million, four hundred fifty-six thousand, sixty-seven".