28323361 has 4 divisors (see below), whose sum is σ = 30898224. Its totient is φ = 25748500.

The previous prime is 28323353. The next prime is 28323371. The reversal of 28323361 is 16332382.

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 a cyclic number.

It is not a de Polignac number, because 28323361 - 2³ = 28323353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28323301) 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, 1287415 + ... + 1287436.

It is an arithmetic number, because the mean of its divisors is an integer number (7724556).

Almost surely, 2^28323361 is an apocalyptic number.

It is an amenable number.

28323361 is a deficient number, since it is larger than the sum of its proper divisors (2574863).

28323361 is a wasteful number, since it uses less digits than its factorization.

28323361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574862.

The product of its digits is 5184, while the sum is 28.

The square root of 28323361 is about 5321.9696541788. The cubic root of 28323361 is about 304.8233717092.

The spelling of 28323361 in words is "twenty-eight million, three hundred twenty-three thousand, three hundred sixty-one".