28663033 has 4 divisors (see below), whose sum is σ = 32757760. Its totient is φ = 24568308.

The previous prime is 28663027. The next prime is 28663043. The reversal of 28663033 is 33036682.

It is a happy number.

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 28663033 - 2⁹ = 28662521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28662986 and 28663004.

It is not an unprimeable number, because it can be changed into a prime (28663043) 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, 2047353 + ... + 2047366.

It is an arithmetic number, because the mean of its divisors is an integer number (8189440).

Almost surely, 2^28663033 is an apocalyptic number.

It is an amenable number.

28663033 is a deficient number, since it is larger than the sum of its proper divisors (4094727).

28663033 is an equidigital number, since it uses as much as digits as its factorization.

28663033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4094726.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 28663033 is about 5353.7867906744. The cubic root of 28663033 is about 306.0370788224.

The spelling of 28663033 in words is "twenty-eight million, six hundred sixty-three thousand, thirty-three".