28422633 has 4 divisors (see below), whose sum is σ = 37896848. Its totient is φ = 18948420.

The previous prime is 28422631. The next prime is 28422643. The reversal of 28422633 is 33622482.

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 not a de Polignac number, because 28422633 - 2¹ = 28422631 is a prime.

It is a super-3 number, since 3×28422633³ (a number of 23 digits) contains 333 as substring.

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 28422633.

It is not an unprimeable number, because it can be changed into a prime (28422631) 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, 4737103 + ... + 4737108.

It is an arithmetic number, because the mean of its divisors is an integer number (9474212).

Almost surely, 2^28422633 is an apocalyptic number.

It is an amenable number.

28422633 is a deficient number, since it is larger than the sum of its proper divisors (9474215).

28422633 is an equidigital number, since it uses as much as digits as its factorization.

28422633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9474214.

The product of its digits is 13824, while the sum is 30.

The square root of 28422633 is about 5331.2881182694. The cubic root of 28422633 is about 305.1790867985.

The spelling of 28422633 in words is "twenty-eight million, four hundred twenty-two thousand, six hundred thirty-three".