28315961807 has 8 divisors (see below), whose sum is σ = 32363212800. Its totient is φ = 24269239224.

The previous prime is 28315961803. The next prime is 28315961809. The reversal of 28315961807 is 70816951382.

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 28315961807 - 2² = 28315961803 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 (28315961803) 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, 9707 + ... + 238172.

It is an arithmetic number, because the mean of its divisors is an integer number (4045401600).

Almost surely, 2^28315961807 is an apocalyptic number.

28315961807 is a deficient number, since it is larger than the sum of its proper divisors (4047250993).

28315961807 is a wasteful number, since it uses less digits than its factorization.

28315961807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264205.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 28315961807 in words is "twenty-eight billion, three hundred fifteen million, nine hundred sixty-one thousand, eight hundred seven".