28643033 has 8 divisors (see below), whose sum is σ = 29352960. Its totient is φ = 27941760.

The previous prime is 28643003. The next prime is 28643047. The reversal of 28643033 is 33034682.

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 28643033 - 2¹⁴ = 28626649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28642987 and 28643005.

It is not an unprimeable number, because it can be changed into a prime (28643003) 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, 4808 + ... + 8966.

It is an arithmetic number, because the mean of its divisors is an integer number (3669120).

Almost surely, 2^28643033 is an apocalyptic number.

It is an amenable number.

28643033 is a deficient number, since it is larger than the sum of its proper divisors (709927).

28643033 is an equidigital number, since it uses as much as digits as its factorization.

28643033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4327.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 28643033 is about 5351.9186279315. The cubic root of 28643033 is about 305.9658818241.

The spelling of 28643033 in words is "twenty-eight million, six hundred forty-three thousand, thirty-three".