28876633 has 4 divisors (see below), whose sum is σ = 29242240. Its totient is φ = 28511028.

The previous prime is 28876621. The next prime is 28876649. The reversal of 28876633 is 33667882.

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 28876633 - 2⁹ = 28876121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28876633.

It is not an unprimeable number, because it can be changed into a prime (28876733) 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, 182685 + ... + 182842.

It is an arithmetic number, because the mean of its divisors is an integer number (7310560).

Almost surely, 2^28876633 is an apocalyptic number.

It is an amenable number.

28876633 is a deficient number, since it is larger than the sum of its proper divisors (365607).

28876633 is an equidigital number, since it uses as much as digits as its factorization.

28876633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365606.

The product of its digits is 290304, while the sum is 43.

The square root of 28876633 is about 5373.6982609745. The cubic root of 28876633 is about 306.7954052790.

The spelling of 28876633 in words is "twenty-eight million, eight hundred seventy-six thousand, six hundred thirty-three".