28095997497 has 8 divisors (see below), whose sum is σ = 37465798656. Its totient is φ = 18728430672.

The previous prime is 28095997481. The next prime is 28095997499. The reversal of 28095997497 is 79479959082.

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

It is not a de Polignac number, because 28095997497 - 2⁴ = 28095997481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28095997499) 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, 529018 + ... + 579699.

It is an arithmetic number, because the mean of its divisors is an integer number (4683224832).

Almost surely, 2^28095997497 is an apocalyptic number.

It is an amenable number.

28095997497 is a deficient number, since it is larger than the sum of its proper divisors (9369801159).

28095997497 is a wasteful number, since it uses less digits than its factorization.

28095997497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117167.

The product of its (nonzero) digits is 102876480, while the sum is 69.

The spelling of 28095997497 in words is "twenty-eight billion, ninety-five million, nine hundred ninety-seven thousand, four hundred ninety-seven".