28262867 has 4 divisors (see below), whose sum is σ = 28303440. Its totient is φ = 28222296.

The previous prime is 28262863. The next prime is 28262879. The reversal of 28262867 is 76826282.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28262867 - 2² = 28262863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28262863) 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, 19223 + ... + 20640.

It is an arithmetic number, because the mean of its divisors is an integer number (7075860).

Almost surely, 2^28262867 is an apocalyptic number.

28262867 is a deficient number, since it is larger than the sum of its proper divisors (40573).

28262867 is an equidigital number, since it uses as much as digits as its factorization.

28262867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40572.

The product of its digits is 129024, while the sum is 41.

The square root of 28262867 is about 5316.2831941122. The cubic root of 28262867 is about 304.6061996382.

The spelling of 28262867 in words is "twenty-eight million, two hundred sixty-two thousand, eight hundred sixty-seven".