28210246444426 has 8 divisors (see below), whose sum is σ = 43009064251524. Its totient is φ = 13873891693920.

The previous prime is 28210246444423. The next prime is 28210246444453. The reversal of 28210246444426 is 62444464201282.

It can be written as a sum of positive squares in 2 ways, for example, as 28053706730625 + 156539713801 = 5296575^2 + 395651^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 28210246444426.

It is not an unprimeable number, because it can be changed into a prime (28210246444421) 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, 115615763995 + ... + 115615764238.

Almost surely, 2^{28210246444426} is an apocalyptic number.

28210246444426 is a deficient number, since it is larger than the sum of its proper divisors (14798817807098).

28210246444426 is a wasteful number, since it uses less digits than its factorization.

28210246444426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231231528296.

The product of its (nonzero) digits is 4718592, while the sum is 49.

The spelling of 28210246444426 in words is "twenty-eight trillion, two hundred ten billion, two hundred forty-six million, four hundred forty-four thousand, four hundred twenty-six".