28122963 has 8 divisors (see below), whose sum is σ = 40906176. Its totient is φ = 17044200.

The previous prime is 28122961. The next prime is 28122971. The reversal of 28122963 is 36922182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28122963 - 2¹ = 28122961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 852211 = 28122963 / (2 + 8 + 1 + 2 + 2 + 9 + 6 + 3).

It is not an unprimeable number, because it can be changed into a prime (28122961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426073 + ... + 426138.

It is an arithmetic number, because the mean of its divisors is an integer number (5113272).

Almost surely, 2^28122963 is an apocalyptic number.

28122963 is a deficient number, since it is larger than the sum of its proper divisors (12783213).

28122963 is a wasteful number, since it uses less digits than its factorization.

28122963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852225.

The product of its digits is 10368, while the sum is 33.

The square root of 28122963 is about 5303.1088052198. The cubic root of 28122963 is about 304.1027577078.

It can be divided in two parts, 2812 and 2963, that added together give a palindrome (5775).

The spelling of 28122963 in words is "twenty-eight million, one hundred twenty-two thousand, nine hundred sixty-three".