28122633 has 64 divisors (see below), whose sum is σ = 52899840. Its totient is φ = 14521680.

The previous prime is 28122631. The next prime is 28122637. The reversal of 28122633 is 33622182.

28122633 is a `hidden beast` number, since 2 + 8 + 1 + 22 + 633 = 666.

It is not a de Polignac number, because 28122633 - 2¹ = 28122631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 28122597 and 28122606.

It is not an unprimeable number, because it can be changed into a prime (28122631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 168316 + ... + 168482.

It is an arithmetic number, because the mean of its divisors is an integer number (826560).

Almost surely, 2^28122633 is an apocalyptic number.

It is an amenable number.

28122633 is a deficient number, since it is larger than the sum of its proper divisors (24777207).

28122633 is an equidigital number, since it uses as much as digits as its factorization.

28122633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 188 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 28122633 is about 5303.0776913034. The cubic root of 28122633 is about 304.1015682373.

It can be divided in two parts, 2812 and 2633, that added together give a palindrome (5445).

The spelling of 28122633 in words is "twenty-eight million, one hundred twenty-two thousand, six hundred thirty-three".