28485095978 has 8 divisors (see below), whose sum is σ = 42906421440. Its totient is φ = 14182955500.

The previous prime is 28485095971. The next prime is 28485095993. The reversal of 28485095978 is 87959058482.

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

It is a super-2 number, since 2×28485095978² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28485095971) 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, 29795648 + ... + 29796603.

It is an arithmetic number, because the mean of its divisors is an integer number (5363302680).

Almost surely, 2^28485095978 is an apocalyptic number.

28485095978 is a deficient number, since it is larger than the sum of its proper divisors (14421325462).

28485095978 is a wasteful number, since it uses less digits than its factorization.

28485095978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59592492.

The product of its (nonzero) digits is 58060800, while the sum is 65.

The spelling of 28485095978 in words is "twenty-eight billion, four hundred eighty-five million, ninety-five thousand, nine hundred seventy-eight".