28233097 has 4 divisors (see below), whose sum is σ = 28439316. Its totient is φ = 28026880.

The previous prime is 28233091. The next prime is 28233103. The reversal of 28233097 is 79033282.

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

It is an interprime number because it is at equal distance from previous prime (28233091) and next prime (28233103).

It can be written as a sum of positive squares in 2 ways, for example, as 14661241 + 13571856 = 3829^2 + 3684^2 .

It is a cyclic number.

It is not a de Polignac number, because 28233097 - 2¹⁹ = 27708809 is a prime.

It is a super-2 number, since 2×28233097² = 1594215532422818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28233091) 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, 102904 + ... + 103177.

It is an arithmetic number, because the mean of its divisors is an integer number (7109829).

Almost surely, 2^28233097 is an apocalyptic number.

It is an amenable number.

28233097 is a deficient number, since it is larger than the sum of its proper divisors (206219).

28233097 is a wasteful number, since it uses less digits than its factorization.

28233097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206218.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 28233097 is about 5313.4825679586. The cubic root of 28233097 is about 304.4992122341.

The spelling of 28233097 in words is "twenty-eight million, two hundred thirty-three thousand, ninety-seven".