28895660654 has 36 divisors (see below), whose sum is σ = 50009845896. Its totient is φ = 12266370000.

The previous prime is 28895660627. The next prime is 28895660659. The reversal of 28895660654 is 45606659882.

It is a super-2 number, since 2×28895660654² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28895660593 and 28895660602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28895660659) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 115122029 + ... + 115122279.

It is an arithmetic number, because the mean of its divisors is an integer number (1389162386).

Almost surely, 2^28895660654 is an apocalyptic number.

28895660654 is a deficient number, since it is larger than the sum of its proper divisors (21114185242).

28895660654 is an frugal number, since it uses more digits than its factorization.

28895660654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 441 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 59.

The spelling of 28895660654 in words is "twenty-eight billion, eight hundred ninety-five million, six hundred sixty thousand, six hundred fifty-four".