28353867 has 4 divisors (see below), whose sum is σ = 37805160. Its totient is φ = 18902576.

The previous prime is 28353863. The next prime is 28353881. The reversal of 28353867 is 76835382.

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 28353867 - 2² = 28353863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28353863) 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, 4725642 + ... + 4725647.

It is an arithmetic number, because the mean of its divisors is an integer number (9451290).

Almost surely, 2^28353867 is an apocalyptic number.

28353867 is a deficient number, since it is larger than the sum of its proper divisors (9451293).

28353867 is an equidigital number, since it uses as much as digits as its factorization.

28353867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9451292.

The product of its digits is 241920, while the sum is 42.

The square root of 28353867 is about 5324.8349270189. The cubic root of 28353867 is about 304.9327702756.

The spelling of 28353867 in words is "twenty-eight million, three hundred fifty-three thousand, eight hundred sixty-seven".