28305915967 has 8 divisors (see below), whose sum is σ = 32402917376. Its totient is φ = 24222239352.

The previous prime is 28305915923. The next prime is 28305915973. The reversal of 28305915967 is 76951950382.

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 28305915967 - 2¹⁹ = 28305391679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28305915367) 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, 3326643 + ... + 3335140.

It is an arithmetic number, because the mean of its divisors is an integer number (4050364672).

Almost surely, 2^28305915967 is an apocalyptic number.

28305915967 is a deficient number, since it is larger than the sum of its proper divisors (4097001409).

28305915967 is an equidigital number, since it uses as much as digits as its factorization.

28305915967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6662397.

The product of its (nonzero) digits is 4082400, while the sum is 55.

The spelling of 28305915967 in words is "twenty-eight billion, three hundred five million, nine hundred fifteen thousand, nine hundred sixty-seven".