28683794454 has 64 divisors (see below), whose sum is σ = 68697953280. Its totient is φ = 7806458880.

The previous prime is 28683794449. The next prime is 28683794473. The reversal of 28683794454 is 45449738682.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171202 + ... + 294410.

It is an arithmetic number, because the mean of its divisors is an integer number (1073405520).

Almost surely, 2^28683794454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28683794454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34348976640).

28683794454 is an abundant number, since it is smaller than the sum of its proper divisors (40014158826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28683794454 is a wasteful number, since it uses less digits than its factorization.

28683794454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123485.

The product of its digits is 46448640, while the sum is 60.

The spelling of 28683794454 in words is "twenty-eight billion, six hundred eighty-three million, seven hundred ninety-four thousand, four hundred fifty-four".