28622833 has 4 divisors (see below), whose sum is σ = 29867328. Its totient is φ = 27378340.

The previous prime is 28622831. The next prime is 28622837. The reversal of 28622833 is 33822682.

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 28622833 - 2¹ = 28622831 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28622831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 622213 + ... + 622258.

It is an arithmetic number, because the mean of its divisors is an integer number (7466832).

Almost surely, 2^28622833 is an apocalyptic number.

28622833 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28622833 is a deficient number, since it is larger than the sum of its proper divisors (1244495).

28622833 is a wasteful number, since it uses less digits than its factorization.

28622833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244494.

The product of its digits is 27648, while the sum is 34.

The square root of 28622833 is about 5350.0311214048. The cubic root of 28622833 is about 305.8939392068.

The spelling of 28622833 in words is "twenty-eight million, six hundred twenty-two thousand, eight hundred thirty-three".