28353967 has 4 divisors (see below), whose sum is σ = 29331720. Its totient is φ = 27376216.

The previous prime is 28353961. The next prime is 28353971. The reversal of 28353967 is 76935382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76935382 = 2 ⋅38467691.

It is a cyclic number.

It is not a de Polignac number, because 28353967 - 2¹⁵ = 28321199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28353961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488833 + ... + 488890.

It is an arithmetic number, because the mean of its divisors is an integer number (7332930).

Almost surely, 2^28353967 is an apocalyptic number.

28353967 is a deficient number, since it is larger than the sum of its proper divisors (977753).

28353967 is an equidigital number, since it uses as much as digits as its factorization.

28353967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977752.

The product of its digits is 272160, while the sum is 43.

The square root of 28353967 is about 5324.8443169730. The cubic root of 28353967 is about 304.9331287598.

The spelling of 28353967 in words is "twenty-eight million, three hundred fifty-three thousand, nine hundred sixty-seven".