28196226953 has 4 divisors (see below), whose sum is σ = 29422149888. Its totient is φ = 26970304020.

The previous prime is 28196226937. The next prime is 28196226967. The reversal of 28196226953 is 35962269182.

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 28196226953 - 2⁴ = 28196226937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28196226895 and 28196226904.

It is not an unprimeable number, because it can be changed into a prime (28196256953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612961433 + ... + 612961478.

It is an arithmetic number, because the mean of its divisors is an integer number (7355537472).

Almost surely, 2^28196226953 is an apocalyptic number.

28196226953 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28196226953 is a deficient number, since it is larger than the sum of its proper divisors (1225922935).

28196226953 is a wasteful number, since it uses less digits than its factorization.

28196226953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1225922934.

The product of its digits is 2799360, while the sum is 53.

The spelling of 28196226953 in words is "twenty-eight billion, one hundred ninety-six million, two hundred twenty-six thousand, nine hundred fifty-three".