28240634108345 has 8 divisors (see below), whose sum is σ = 34297059254976. Its totient is φ = 22320308403376.

The previous prime is 28240634108299. The next prime is 28240634108431. The reversal of 28240634108345 is 54380143604282.

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

It is a cyclic number.

It is not a de Polignac number, because 28240634108345 - 2¹⁴ = 28240634091961 is a prime.

It is a super-4 number, since 4×28240634108345⁴ (a number of 55 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28240634108293 and 28240634108302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34024859957 + ... + 34024860786.

It is an arithmetic number, because the mean of its divisors is an integer number (4287132406872).

Almost surely, 2^{28240634108345} is an apocalyptic number.

It is an amenable number.

28240634108345 is a deficient number, since it is larger than the sum of its proper divisors (6056425146631).

28240634108345 is an equidigital number, since it uses as much as digits as its factorization.

28240634108345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68049720831.

The product of its (nonzero) digits is 4423680, while the sum is 50.

The spelling of 28240634108345 in words is "twenty-eight trillion, two hundred forty billion, six hundred thirty-four million, one hundred eight thousand, three hundred forty-five".