28345353 has 4 divisors (see below), whose sum is σ = 37793808. Its totient is φ = 18896900.

The previous prime is 28345349. The next prime is 28345357. The reversal of 28345353 is 35354382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (28345349) and next prime (28345357).

It is a cyclic number.

It is not a de Polignac number, because 28345353 - 2² = 28345349 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28345357) 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, 4724223 + ... + 4724228.

It is an arithmetic number, because the mean of its divisors is an integer number (9448452).

Almost surely, 2^28345353 is an apocalyptic number.

It is an amenable number.

28345353 is a deficient number, since it is larger than the sum of its proper divisors (9448455).

28345353 is an equidigital number, since it uses as much as digits as its factorization.

28345353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9448454.

The product of its digits is 43200, while the sum is 33.

The square root of 28345353 is about 5324.0354055923. The cubic root of 28345353 is about 304.9022458382.

The spelling of 28345353 in words is "twenty-eight million, three hundred forty-five thousand, three hundred fifty-three".