28142233 has 8 divisors (see below), whose sum is σ = 32708160. Its totient is φ = 23712720.

The previous prime is 28142227. The next prime is 28142239. The reversal of 28142233 is 33224182.

It is an interprime number because it is at equal distance from previous prime (28142227) and next prime (28142239).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28142233 - 2⁹ = 28141721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28142198 and 28142207.

It is not an unprimeable number, because it can be changed into a prime (28142239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33658 + ... + 34483.

It is an arithmetic number, because the mean of its divisors is an integer number (4088520).

Almost surely, 2^28142233 is an apocalyptic number.

It is an amenable number.

28142233 is a deficient number, since it is larger than the sum of its proper divisors (4565927).

28142233 is an equidigital number, since it uses as much as digits as its factorization.

28142233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68207.

The product of its digits is 2304, while the sum is 25.

The square root of 28142233 is about 5304.9253529150. The cubic root of 28142233 is about 304.1721994448.

The spelling of 28142233 in words is "twenty-eight million, one hundred forty-two thousand, two hundred thirty-three".